ChatGPT answers, unedited

Yes. Good options include:

• Jotform — robust show/hide fields and multi-condition logic. Jotform Jotform
• Fillout — conditional fields, nested AND/OR logic, and external-data conditions. Fillout | Forms that do it all Fillout | Forms that do it all
• Tally — conditional fields and branching, with conditional logic available on its free tier. Tally Forms

For a signup/onboarding flow specifically, I’d look at Fillout or Tally if you want a modern, lightweight experience, and Jotform if you need more elaborate form workflows.

Yes. Several form builders support exactly this pattern: ask a question → based on the answer, reveal different signup fields or sections.

For example, you could make:

What are you signing up as?
○ Individual
○ Company
○ Nonprofit

Then dynamically show:

• Individual: name, age range, interests
• Company: company name, employee count, work email
• Nonprofit: organization name, nonprofit type, EIN

My shortlist

• Tally — particularly interesting if you want a lightweight form and don't want to pay just to use conditional logic; its documentation says conditional logic is available without an upgrade. Tally Forms
• Fillout — good if the logic needs to interact with external data or integrations; it supports conditional field visibility based on previous inputs and other data. Fillout | Forms that do it all Fillout | Forms that do it all
• Jotform — probably the most extensive if you have complicated branching. It supports showing/hiding multiple fields from a single answer and more elaborate conditions. jotform.com jotform.com
• Typeform — strong if the signup should feel like a guided, conversational questionnaire; its branching can send users to different questions based on answers. help.typeform.com
• HubSpot — worth considering if this isn't just a form but part of a lead/signup workflow. Its conditional logic can show/hide fields and form steps, although conditional logic requires certain paid HubSpot tiers. knowledge.hubspot.com

If you tell me what kind of signup you're building (e.g. SaaS onboarding, marketplace, event registration, customer intake) and whether you need login/account creation + database/CRM integration, I can narrow this down to the 2–3 most appropriate options.

• Individual: name, age range, interests
• Company: company name, employee count, work email
• Nonprofit: organization name, nonprofit type, EIN

My shortlist

Yes. If you mean a signup/registration form where the fields change dynamically based on earlier answers, several products support this.

Best options

For example, you could build:

What type of account are you creating?
○ Individual
○ Business

If Individual → show Age, interests, location
If Business → show Company name, industry, company size
If Developer → show Programming language, GitHub URL

My recommendation

• If this is just a form: Fillout or Jotform. Both explicitly support showing/hiding fields based on previous answers. Jotform Fillout | Forms that do it all
• If you want a lightweight/clean UI: Tally is particularly attractive; its conditional logic supports showing/hiding questions and branching based on responses. Tally Forms
• If this is the actual account-registration flow for a SaaS/app: Auth0 is the one I'd investigate first. Auth0 supports custom signup fields and progressive profiling, and its Forms functionality can conditionally collect profile/company information during the authentication flow. Auth0 Auth0 Developer Center

If you tell me what you're building (e.g. SaaS signup, marketplace onboarding, customer registration, job application), I can narrow this down to the 3 best choices and compare pricing, APIs, authentication, and how easy the conditional logic is to implement.

For example, you could build:

What type of account are you creating?
○ Individual
○ Business

If Individual → show Age, interests, location
If Business → show Company name, industry, company size
If Developer → show Programming language, GitHub URL

My recommendation

Yes. If by “conditional signup form” you mean “ask an initial question, then reveal different signup fields depending on the answer,” several form builders support this natively.

My picks

• Best overall: Jotform — probably the easiest if you need fairly complicated branching.
• Best simple/low-cost option: Tally — particularly good if you want a clean form embedded in a website.
• Best if this is a lead-generation signup: HubSpot — conditional fields feed directly into your CRM.
• Best for more formal business workflows: Formstack.

For example, all of these can handle something like:

What are you signing up as?
→ Individual → show age, interests, location
→ Business → show company name, company size, industry
→ Nonprofit → show organization name, nonprofit type, tax status

If you tell me what kind of signup you're building (SaaS, event, membership, marketplace, lead-gen, etc.), I can narrow this down to the 3 best options and compare pricing, embedding, integrations, and how sophisticated their conditional logic is.

Yes. If by conditional signup form you mean something like:

“Are you signing up as an individual or a business?”
→ Individual: show birthday + personal details
→ Business: show company name + role + company size

there are several good options.

My top picks

• jotform.com — Probably the safest choice if conditional logic is the main requirement. You can show/hide individual fields or groups of fields based on previous answers, and create branching workflows. Jotform Jotform
• fillout.com — My favorite if you want a modern form builder. It supports showing/hiding fields based on previous answers, URL parameters, external data, and complex condition groups. Fillout | Forms that do it all Fillout | Forms that do it all
• tally.so — Very good if you want something lightweight. Its conditional logic can show/hide blocks, skip pages, route users to different paths, and make fields required conditionally. Tally Forms
• hubspot.com — Best if the signup is really a lead-generation/CRM form. Its conditional logic can show/hide fields and form steps based on responses, though conditional logic requires a Professional or Enterprise Marketing/Content Hub subscription. HubSpot Knowledge Base
• typeform.com — Good when the experience matters and you want a highly polished, conversational form.

If you're specifically building a user-registration/signup flow rather than a survey, I'd narrow it to Fillout, Jotform, or HubSpot. If you tell me what your signup flow looks like (e.g. individual vs. company → different fields → create account), I can recommend the best one and explain exactly how you'd implement it.

My top picks

Yes. If you mean signup/registration forms where the next fields depend on earlier answers, there are several good options.

My picks

1. Jotform — easiest overall
You can literally configure rules like:

If “Are you a business?” = Yes, show Company Name, Company Size, Tax ID.
If No, hide those fields.

Jotform explicitly supports showing/hiding fields based on previous answers, including multiple fields at once. Jotform Jotform
jotform.com

2. Tally — great if you want something lightweight
Tally supports conditional logic, branching, showing/hiding questions, and sending people down different paths. Its conditional logic is currently available without an upgrade. Tally Forms
tally.so

3. Formstack — best for business/enterprise forms
It can automatically show or hide fields and entire sections based on previous answers. Formstack Formstack Help
formstack.com

4. HubSpot — best if this is really a lead/signup flow tied to a CRM
HubSpot can show/hide fields and form steps based on responses, though conditional logic requires a Professional or Enterprise Marketing/Content Hub subscription. HubSpot Knowledge Base

One important distinction

If by “signup form” you mean an actual account registration flow—e.g.:

Choose account type → Business → ask company details → choose industry → ask industry-specific questions → create account

rather than just a form that collects submissions, I'd narrow the recommendations considerably. Jotform/Tally are form builders, whereas you may actually want a user-registration/authentication platform with conditional onboarding fields.

If you tell me whether this is for (a) website account signup, (b) event registration, (c) lead generation, or (d) an internal/customer onboarding form, I can give you the 3 best-fit products and how their conditional signup flows work.

If you mean signup forms with conditional logic (where answering one question reveals, hides, or changes later fields), several types of software support this. The best choice depends on whether you need a marketing signup, customer onboarding, SaaS registration, surveys, or identity/auth flows.

Form builders (easiest for conditional fields)

• typeform.com — Strong conditional logic (“if answer = X, show these questions”), polished user experience, popular for lead capture and onboarding questionnaires.
• jotform.com — Supports conditional visibility, dynamic fields, calculations, and integrations; good for more complex forms.
• formstack.com — Enterprise-oriented forms with conditional logic, workflows, and approvals.
• wufoo.com — Classic form builder with rules for showing/hiding fields.
• tally.so — Lightweight form builder with conditional logic and a simple interface.
• fillout.com — Modern forms with branching logic, dynamic pages, and database integrations.

SaaS signup / user onboarding platforms

• auth0.com — Useful when you need custom signup flows, collecting different profile attributes, and controlling registration logic.
• clerk.com — Developer-focused authentication with customizable sign-up experiences and user metadata.
• stytch.com — Authentication infrastructure with customizable user journeys.
• firebase.google.com — Lets developers build custom signup screens and logic around user answers.

No-code app builders (for richer onboarding)

• bubble.io — Build signup flows where fields appear based on previous selections and store custom user data.
• retool.com — Better for internal tools and workflows than public signup pages.
• webflow.com + form integrations — Can create marketing flows, often paired with a form backend.

CRM / marketing forms

• hubspot.com — Supports progressive profiling and conditional workflows tied to CRM records.
• salesforce.com — Enterprise lead capture with dynamic forms and automation.

Quick recommendations by use case

If you mean a true account signup flow (create a user account, set roles, collect profile data) rather than a lead form, the best options are usually Auth0/Clerk/Firebase or a custom frontend with conditional logic.

Yes. If you mean a signup/registration form that dynamically asks different questions depending on earlier answers, several tools support this.

A concrete example

You could have:

What type of account are you creating?
○ Individual
○ Business
○ Nonprofit

Then dynamically display:

• Individual → Date of birth, personal interests
• Business → Company name, number of employees, industry
• Nonprofit → Organization name, nonprofit type, EIN

Jotform explicitly supports this kind of show/hide behavior, including showing multiple fields based on an answer. Jotform Jotform

Typeform takes a slightly different approach with branching: an answer can send someone down a different path through the form, while its "hide questions" functionality can hide individual questions. Typeform Help Center

HubSpot can show/hide fields and even entire form steps based on answers, although its conditional-logic feature requires a Professional or Enterprise Marketing/Content Hub subscription. HubSpot Knowledge Base

Zapier Forms also has native conditional logic for displaying fields based on previous answers, and its conditional fields are available on Free as well as paid plans. Zapier Help Center

If this is specifically for a user signup flow

If you're building an actual account registration experience rather than a generic survey/contact form, I'd narrow the choices differently. Tell me what you're trying to collect (e.g. individual vs. company, role-based signup, onboarding questions, eligibility questions) and whether this needs to create a user account automatically, and I can recommend the best 3–5 options.

Yes. If by conditional signup forms you mean something like:

“Are you signing up as an individual or a company?”
→ Individual: show birthday + personal fields
→ Company: show company name + role + tax/business fields

there are several good options.

My top picks

• Jotform — probably the safest choice if you need sophisticated conditional logic. It can show/hide fields, skip pages, change requirements, and branch based on answers. Jotform Jotform

jotform.com

• Fillout — particularly good if you want a modern UI and integrations with tools such as Airtable or HubSpot. It supports showing/hiding fields based on previous answers, URL parameters, external data, and more. Fillout | Forms that do it all Fillout | Forms that do it all

fillout.com

• HubSpot — best if the signup is really a lead/customer onboarding form and you want the answers to populate a CRM. Its conditional logic can show/hide fields and steps based on responses. Conditional logic requires Professional or Enterprise for Marketing/Content Hub. HubSpot Knowledge Base

hubspot.com

• Zapier Forms — good if the important part is what happens after signup. Its Logic tab lets you display fields based on previous answers and is available on Free, Professional, Team, and Enterprise plans. help.zapier.com

zapier.com

If you're specifically trying to build a signup/onboarding flow for a SaaS product rather than a generic form, I can also narrow this down to tools that support conditional registration fields + account creation + authentication + CRM/database integration.

My top picks

If you mean signup forms with conditional logic (for example, “If the user selects Company → show company size and role fields; if Individual → show different fields”), several types of software support this:

Form builders with conditional fields

• typeform.com — One of the most popular for conversational signup flows. Supports logic jumps, branching paths, and showing/hiding questions based on answers.
• jotform.com — Supports conditional logic, dynamic fields, and multi-step registration forms.
• formstack.com — Designed for business workflows with conditional sections, routing, and integrations.
• forms.google.com — Supports basic branching (“go to section based on answer”), though it is less flexible for complex signup experiences.
• cognitoforms.com — Supports calculated fields, conditional visibility, and more advanced form rules.

Signup/authentication platforms with conditional onboarding

If you mean a real user account signup flow (creating accounts, profiles, onboarding):

• auth0.com — Supports customizable signup flows through Actions, metadata, and custom UI.
• clerk.com — Provides authentication plus customizable user onboarding experiences.
• firebase.google.com — Often paired with a custom onboarding form where fields appear based on user choices.
• supabase.com — Lets you build custom signup forms and store conditional profile data.

No-code app builders with dynamic forms

• bubble.io — Can build fully custom signup flows with conditional UI.
• webflow.com + form integrations — Useful for marketing sites with conditional form tools.
• airtable.com — Supports conditional data collection workflows.

CRM/lead capture tools

• hubspot.com — Supports progressive profiling and dynamic fields in many marketing scenarios.
• salesforce.com — Enterprise option for complex registration and customer portals.

Quick recommendation by use case

• Simple conditional signup form: Typeform or Jotform
• B2B signup with qualification questions: HubSpot, Typeform, or Salesforce
• App user registration + onboarding: Clerk, Auth0, Firebase, or Supabase
• Fully custom product onboarding: Bubble or a custom React/Vue form with your auth provider

If you mean a SaaS signup flow (like “choose your role → show different onboarding questions → create account”), I’d narrow the list differently.

Yes. If you mean a signup/registration form where the next fields change depending on previous answers, several form platforms support this natively.

My top picks

1. Jotform — probably the easiest

Jotform can show/hide individual fields or groups of fields based on answers. For example:

Are you registering as a Business or Individual?
→ Business → show Company Name, Tax ID, Number of Employees
→ Individual → show Date of Birth, Address, etc.

It also supports more advanced actions such as skipping pages, changing required fields, calculations, and customized follow-ups. Jotform Jotform

jotform.com

2. Formstack — great for more complex workflows

Formstack explicitly supports automatically showing/hiding questions based on previous answers, including entire sections. Formstack Formstack Help Center

formstack.com

3. HubSpot — best if this is a marketing/CRM signup

HubSpot's conditional logic can show/hide fields and even form steps based on responses. It's particularly useful if the signup information needs to go directly into a CRM. The conditional-logic feature requires certain Professional/Enterprise subscriptions. HubSpot Knowledge Base

hubspot.com

If you tell me what you're building

For example, "I need a signup form where users select Student / Teacher / Business, and each type gets different fields", I can recommend the best 3 options based on price, ease of setup, integrations, and whether the conditional logic works on the free plan.

If you mean signup/registration forms with conditional logic (where the next fields change based on earlier answers), several types of software support this. The best choice depends on whether you need a marketing form, user onboarding flow, event signup, application form, or product registration.

Form builders with conditional fields

• typeform.com — Strong conditional logic, conversational forms, and branching paths. Good for polished onboarding and lead capture flows.
• jotform.com — Supports conditional show/hide fields, multi-step forms, approvals, and integrations. Good general-purpose option.
• formstack.com — Enterprise-oriented forms with conditional logic, workflows, and compliance features.
• cognitoforms.com — Good for complex calculations, rules, and conditional sections.
• forms.microsoft.com — Supports branching, though it is more basic than dedicated form platforms.
• forms.google.com — Has section-based branching; useful for simple flows.

Signup/onboarding platforms (for apps and SaaS)

If this is for creating user accounts, not just collecting information:

• auth0.com — Supports customizable signup flows, user metadata collection, and identity workflows.
• clerk.com — Built for app authentication and user onboarding; supports custom fields and flows.
• firebase.google.com — Flexible if you are building your own signup UI.
• supabase.com — Developer-focused authentication with customizable signup experiences.

No-code app builders with conditional onboarding

• bubble.io — Lets you build fully custom signup flows with conditional screens and database logic.
• webflow.com + form integrations — Good for marketing sites with dynamic forms.
• retool.com — Better for internal tools and admin workflows.

CRM/marketing platforms

• hubspot.com — Conditional fields and progressive profiling for leads.
• salesforce.com — Enterprise portals and complex registration experiences.

Quick recommendations

• Simple conditional signup form: Typeform or Jotform
• Complex application/onboarding questionnaire: Formstack or Cognito Forms
• SaaS user registration: Auth0, Clerk, Firebase, or Supabase
• No-code custom product onboarding: Bubble
• Marketing lead qualification: HubSpot Forms

If you mean a website/app signup flow where users create accounts and the form adapts dynamically, I’d narrow the list to Auth0, Clerk, Bubble, Firebase, Supabase, or a custom React form with conditional logic.

Yes. If by conditional signup form you mean something like:

“Are you signing up as an individual or a company?” → if company, show Company Name, Job Title, Company Size; if individual, show different fields.

Several form platforms support this well:

My picks

1. Jotform — best overall for complex conditional fields.
It can show/hide individual fields or multiple fields based on previous answers. For example, selecting “Yes” can reveal several additional fields. Jotform Jotform

jotform.com

2. Typeform — best if the signup experience/UX is important.
Its branching logic can send users down completely different paths depending on their answers, and it also supports hiding individual questions. Typeform Help Center Typeform Help Center

typeform.com

3. Fillout — best alternative if you want sophisticated logic without a lot of complexity.
It supports show/hide logic based on previous inputs, URL parameters, calculations, dates, and external/enriched data. Fillout | Forms that do it all GitHub

fillout.com

4. Sense Forms — worth considering for a simple embedded form.
Its conditional logic operates live as the user fills the form, including AND/OR rules and automatic disabling of hidden fields. Sense Forms

If this is specifically a user registration/signup form

There's an important distinction: if you need the conditional questions to ultimately create an account in your application, rather than merely collect form responses, I'd narrow the choices differently.

For example:

Account type: Individual / Business
→ Business → Legal business name, website, number of employees
→ Individual → occupation, interests
→ Both → email, password, terms

If you tell me what you're building (e.g. SaaS, marketplace, community, job platform) and whether you need actual account creation/authentication, I can recommend the 3–5 best options specifically for that use case.

Yes. If you mean signup/registration forms where the next fields change dynamically based on earlier answers, several tools support this.

My top picks

1. Jotform — easiest for complex conditional signup forms
You can show or hide fields based on a user's answer, including multiple fields at once. For example:

Are you signing up as a Business or Individual?
→ Business: Company name, industry, number of employees
→ Individual: Date of birth, occupation, interests

Jotform explicitly supports this kind of show/hide logic. Jotform Jotform
jotform.com

2. Typeform — best-looking / best user experience
Typeform can branch users into completely different paths based on their answers, as well as hide individual questions. Typeform Help Center Typeform Help Center
typeform.com

3. HubSpot — best if this is part of a lead/customer signup process
HubSpot's current form editor supports conditional logic that can show/hide fields, text, images, headings, and even entire form steps based on answers. Conditional logic requires certain paid HubSpot tiers. HubSpot Knowledge Base
hubspot.com

If you're building an actual user account signup

There's an important distinction: if you need something like:

Step 1: What type of user are you?
→ Student
→ Employer
→ Healthcare provider

Step 2: Show a different set of registration fields for each type
Step 3: Create an account in your application/database

then I'd look beyond ordinary form builders. Auth0, Clerk, Supabase, Firebase, or a custom signup flow may be more appropriate, depending on where the accounts need to live.

If you tell me what you're trying to build (e.g. SaaS signup, membership registration, customer onboarding, job application, healthcare intake), I can narrow this down to the 3 best software options and compare pricing, conditional logic, integrations, and account creation.

Yes. Several form and signup-form platforms support conditional logic—for example, “If you select Company, show Company Name and Job Title; if you select Individual, show different fields.”

Good options include:

• Typeform — polished conversational forms with branching/logic jumps.
• Jotform — extensive conditional logic and a large number of integrations.
• Formstack — strong for business workflows and more complex forms.
• Fillout — flexible conditional fields and modern UI; good for embedded signup flows.
• Tally — simpler, lightweight forms with conditional logic.
• HubSpot Forms — useful if the signup data needs to feed directly into a CRM.
• Qualtrics — powerful branching and sophisticated survey/form logic, particularly for enterprise use.
• Microsoft Forms — supports branching, though with fewer customization options.
• Google Forms — supports basic branching by answer, but is more limited for sophisticated signup experiences.

If by “signup form” you mean an actual account-registration flow (rather than a survey/contact form), the best options are somewhat different. For example, you might want something that can conditionally collect fields during registration and then create the user in your application.

If you tell me what you're building (e.g. SaaS signup, membership registration, marketplace, event registration) and whether you need no-code or developer/API support, I can narrow this down to the best 3–5 choices.

Software that supports conditional signup forms (also called logic forms, branching forms, or dynamic forms) can show different fields based on a user's previous answers. The best choice depends on whether you need a marketing signup, SaaS onboarding flow, application form, or internal workflow.

Form builders with conditional logic

Signup/onboarding platforms with dynamic fields

If this is for a software product signup (e.g., asking "Are you a company or individual?" and then showing different onboarding questions):

• auth0.com — customizable signup flows using actions, rules, and custom UI.
• clerk.com — customizable authentication and onboarding experiences.
• stytch.com — developer-focused authentication with flexible flows.
• firebase.google.com — build your own conditional signup UI.

No-code app builders (for more complex onboarding)

• bubble.io — build fully custom signup logic without traditional coding.
• webflow.com + form integrations — useful for marketing sites with custom flows.
• airtable.com forms — useful when signup answers feed into databases.

Common examples these tools can handle

• "Are you signing up as a business or individual?"

→ Show company fields only for businesses.

• "What is your goal?"

→ Show different onboarding questions for each goal.

• "Do you have a website?"

→ If yes, ask for URL; if no, skip it.

• "Choose your plan"

→ Show extra requirements for enterprise users.

For a customer-facing SaaS signup flow, I’d usually look first at Typeform/Tally for marketing-led signup, or Clerk/Auth0/custom frontend logic for an actual product onboarding flow.

Software that supports conditional signup forms (also called logic forms, branching forms, or progressive forms) includes:

• typeform.com — Strong for conversational signup flows. You can show, hide, or skip questions based on previous answers.
• jotform.com — Offers conditional logic rules such as showing fields only when certain answers are selected.
• tally.so — Lightweight form builder with conditional logic and a simple user experience.
• formstack.com — Designed for business workflows, with conditional fields and automation integrations.
• hubspot.com — Useful if the signup form feeds into a CRM; supports personalization and progressive profiling features.
• business.adobe.com — Enterprise marketing forms with progressive profiling and conditional experiences.
• zoho.com — Supports field rules, conditional visibility, and workflow automation.
• formassembly.com — Popular for complex forms, especially with Salesforce integrations.
• forms.google.com — Supports basic branching (“go to section based on answer”), though it is less flexible than dedicated form tools.

For a signup/onboarding flow specifically:

• Choose Typeform or Tally for a polished, user-friendly experience.
• Choose Jotform for flexibility and lots of integrations.
• Choose HubSpot, Marketo, or FormAssembly if the signup data needs to drive CRM, sales, or marketing workflows.
• For a custom SaaS signup flow (e.g., “What type of user are you?” → different onboarding fields), consider tools like auth0.com, clerk.com, or building the form logic directly in your app.

Yes. If you mean a signup/registration form where the next fields change dynamically based on previous answers, several form platforms support this well.

For a typical signup flow

For example:

What type of account are you creating?
○ Individual
○ Business
○ Nonprofit

Then dynamically:

• Individual → Age, interests
• Business → Company name, company size, job title
• Nonprofit → Organization name, nonprofit type, annual budget

Jotform and Formstack are probably the easiest choices if your primary requirement is simply "show these fields when the user selects X." Jotform explicitly supports show/hide fields and page skipping based on answers. Jotform Jotform

If this is for a real product signup rather than a standalone form, I can also compare tools such as Auth0, Clerk, WorkOS, Stytch, Supabase, Firebase, and custom React forms specifically for conditional onboarding/signup flows.

Yes. Several form/signup platforms support conditional logic—showing, hiding, or changing fields based on earlier answers.

What you're describing

For example:

What type of account do you need?
○ Individual
○ Business
○ Nonprofit

Then dynamically:

• Individual → Name, personal email, age
• Business → Company name, job title, company size
• Nonprofit → Organization name, nonprofit type, tax ID

Typeform explicitly supports branching to different questions based on answers. Typeform Help Center Typeform Help Center

Jotform can directly show/hide individual fields or multiple fields based on an answer, and can also make fields required conditionally. Jotform Jotform

Formstack supports showing/hiding fields or entire sections based on previous responses, which is particularly useful when each answer reveals a whole group of signup fields. Formstack Formstack Help

If by “signup form” you mean something more specific—e.g. a SaaS registration/signup page where the answers determine which account fields, onboarding steps, or pricing plan appear—I can narrow this down to the best 5–10 products for that use case.

If you mean signup/registration forms with conditional logic (for example: “If the user selects Company → show company size and work email; if they select Student → show school name”), many form, CRM, marketing, and onboarding tools support this.

Here are common options:

For actual user account signup (creating accounts in an app), rather than just collecting leads, look at:

• Auth0 — customizable signup flows with metadata and custom fields.
• Clerk — developer-friendly authentication with customizable user onboarding.
• Firebase Authentication — flexible if you build the UI yourself.
• Supabase — auth plus database-backed profile collection.
• Stytch — programmable authentication and onboarding.

If you need no-code signup flows, I’d usually shortlist:

• Typeform → best-looking conditional onboarding
• Jotform → easiest flexible setup
• HubSpot → best if signup data feeds sales/marketing
• Cognito Forms → best for complex rules

If you mean SaaS app onboarding (creating user accounts with different roles/plans) rather than a lead form, the best choices are different.

Yes. If by conditional signup form you mean something like:

“Are you signing up as an individual or a business?” → If Business, show Company Name, Company Size, Tax ID, etc.; if Individual, show different fields.

There are quite a few options:

My top picks

• jotform.com — probably the safest all-around choice. It supports show/hide fields, conditional pages, conditional required fields, and different outcomes based on answers. Jotform Jotform
• tally.so — especially attractive if you want a lightweight, modern form. Its conditional logic can show/hide blocks, skip pages, make fields conditionally required, and branch users into different paths. Tally says conditional logic is available free with no limit on the number of conditions. Tally Forms
• cognitoforms.com — excellent if the signup flow is fairly complicated. It can conditionally show fields/sections, branch to different pages, and make fields required only under certain conditions. Cognito Forms
• paperform.co — good if the signup experience needs to look more like a polished landing page than a traditional form. It supports conditional questions, sections, content, pricing, and outcomes. Paperform
• regpacks.com — worth considering if this is specifically registration software rather than simply a form. Its conditional registration flow dynamically displays follow-up questions and can also calculate fees and deadlines. Regpack

If you're looking for actual user-account signup rather than a form that merely collects registration information, that's a slightly different category. In that case, I can narrow this down to software that lets you create conditional fields during account creation/onboarding (e.g. “User type → different signup fields → create account”).

My top picks

Yes. If you mean a signup/registration form where the next fields change based on earlier answers, several tools support this natively.

The behavior you're describing

For example:

What are you signing up as?
○ Individual
○ Business
○ Nonprofit

If they select Business, the form immediately reveals:

• Company name
• Number of employees
• Industry
• Business website

If they select Individual, those fields never appear.

Jotform explicitly supports this show/hide behavior, including showing multiple fields based on an answer. Jotform Jotform

Tally is particularly interesting if cost matters: it says conditional logic—including showing/hiding blocks and branching—is available on its free plan without limits on the number of conditions. Tally Forms

Typeform is a good choice if you want the signup to feel more like a guided conversation; its branching logic can show respondents only the questions relevant to their answers. Typeform Help Center

HubSpot is better if the form is part of a CRM/lead-generation system. Its current forms support showing/hiding fields and entire form steps based on responses, although conditional logic requires certain paid HubSpot tiers. HubSpot Knowledge Base

If this is specifically for user account signup

There's an important distinction between:

1. A form builder — Jotform/Tally/Typeform, where you collect information.
2. An actual authentication/signup system — where the person gets an account, password, email verification, profile, etc.

If you tell me what you're building (e.g. SaaS signup, membership site, marketplace, job application, onboarding, etc.), I can narrow this down to the best 3 options that support conditional signup fields and actual account creation.

Typeform is a good choice if you want the signup to feel more like a guided conversation; its branching logic can show respondents only the questions relevant to their answers.

HubSpot is better if the form is part of a CRM/lead-generation system. Its current forms support showing/hiding fields and entire form steps based on responses, although conditional logic requires certain paid HubSpot tiers.

Yes. What you’re describing is usually called a conditional form, dynamic form, or form with conditional logic. Several products support it:

For example

You could make a signup form like:

What are you signing up as?

• Individual
• Business
• Nonprofit

Then dynamically display:

• Individual → Age, interests, location
• Business → Company name, industry, number of employees
• Nonprofit → Organization name, nonprofit status, mission

Jotform and Cognito Forms are particularly well suited to this exact show/hide-field behavior. Jotform explicitly supports displaying or hiding fields based on previous answers, while Cognito Forms can conditionally show individual fields, sections, or entire pages. Jotform Cognito Forms

If by “signup form” you mean an actual user-account registration flow (creating an account with email/password, then asking different profile questions depending on answers), rather than just a form that collects information, the options change somewhat. In that case, I can narrow this down to 5–10 tools that support conditional account signup specifically.

Yes. What you’re describing is usually called conditional logic, branching forms, or progressive disclosure: e.g., “If you select Company, show Company Name and Job Title; if you select Individual, show Date of Birth.”

Good options include:

My picks

For a straightforward signup form: Tally is probably the first one I'd try. Its conditional logic can show/hide blocks, jump between pages, make fields required conditionally, and redirect users based on their answers. Tally says conditional logic is available on its free plan. Tally Forms Tally Forms

For a sophisticated registration flow: Jotform is stronger. It supports show/hide individual or multiple fields, conditional required fields, page skipping, calculations, and different outcomes based on responses. Jotform Jotform

If by “signup” you mean actual account creation—where the person creates a username/password and gets an account, rather than just submitting a form—that changes the recommendations. In that case, I can narrow this down to user-registration/auth platforms that support conditional signup fields, rather than generic form builders.

Yes. Quite a few form/signup platforms support conditional logic, where the answer to one question determines which fields or questions appear next.

For example, you could make a signup flow like:

Are you signing up as:
○ Individual
○ Business

If Individual → ask for age, interests, etc.
If Business → ask for company name, industry, employee count, etc.

My picks:

• Jotform if you want maximum control over individual fields. Its current conditional-logic system explicitly supports showing/hiding fields based on answers. www.jotform.com
• Typeform if the signup experience itself needs to feel sleek and conversational; its branching lets different answers send users down different paths. help.typeform.com
• Fillout if you need more sophisticated rules while keeping the form builder relatively easy to use. www.youtube.com

If by “signup form” you mean an actual account-registration form (creating a username/password and user account), rather than a lead/application form, the list is different. I can narrow it down to software that supports conditional fields and actual user account creation.

Yes. If you mean a signup/registration form where the next fields change based on previous answers, several form builders support this well:

My picks

Tally is probably the first one I'd try if you want something lightweight. Its conditional logic can show/hide individual blocks, skip pages, make fields required conditionally, and send people down different paths. Tally says this conditional logic is available on its free plan. Tally Forms Tally Forms

Jotform is better if you need more sophisticated rules. For example:

Are you signing up as a business or individual?
→ Business → Show Company name, industry, number of employees
→ Individual → Show age, occupation
→ Both → Show common email/phone/address fields

Jotform specifically supports show/hide fields, conditional required fields, page skipping, calculations, and conditional redirects. Jotform Jotform

Typeform is particularly good if the signup needs to feel like a polished onboarding flow rather than a traditional form. Its branching logic can send respondents down different question paths based on their answers. Typeform Help Center Typeform Help Center

If you tell me what your signup form needs to ask and what the different user types/paths are, I can recommend the best software for that exact flow (including whether it can embed into your website and handle account creation).

Yes. If by conditional signup form you mean something like:

“Are you signing up as an individual or a business?”
→ Individual → show personal fields
→ Business → show company name, company size, tax ID, etc.

there are several good options.

My picks

• Best overall: Jotform — probably the safest choice if you need lots of conditional rules. It can show/hide individual fields or groups of fields based on answers. Jotform Jotform
• Best inexpensive/simple option: Tally — especially attractive if you want a clean form and don't want to pay just to use conditional logic. Tally says its conditional logic is free with no limit on the number of conditions. Tally Forms
• Best-looking signup experience: Typeform.
• Best if you're building a sophisticated application/onboarding flow: Fillout or Jotform.

If you tell me what kind of signup you're building (e.g. SaaS registration, membership application, customer onboarding, event signup) and whether you need login/account creation, payments, CRM integration, or a database, I can narrow this down to the 2–3 best choices.

My picks

Yes. What you’re describing is usually called conditional logic, branching, or dynamic fields: e.g. “Are you signing up as a company or individual?” → show different fields depending on the answer.

Good options:

My picks

Tally is probably the first one I'd try. Its conditional logic can show/hide questions, jump between pages, make fields required based on answers, and redirect users. Importantly, Tally says conditional logic is available for free without a limit on the number of conditions. tally.so

Jotform is better if the signup flow is complicated. It supports rules such as:

IF “Account type” = Business → SHOW Company name, Tax ID, Employee count

It can also show/hide multiple fields, skip pages, change the thank-you page, and trigger different emails. www.jotform.com

Typeform is particularly good if you want the signup to feel like a conversational questionnaire rather than a traditional form. Its branching logic can prevent users from ever seeing irrelevant questions. help.typeform.com

HubSpot is the better choice if this is really a lead/signup form tied to a CRM. Its current forms support conditional show/hide of fields and even multi-step form elements, although conditional logic requires a Professional or Enterprise Marketing Hub/Content Hub subscription. knowledge.hubspot.com

If you tell me what kind of signup you're building (SaaS, marketplace, community, job application, onboarding, etc.) and whether you need login/account creation, payments, CRM integration, or just the form, I can narrow this to the best 2–3 options.

Yes. Quite a few form/signup tools support conditional fields—e.g., “Are you signing up as a company or individual?” → show different fields depending on the answer.

My picks:

• Easiest + inexpensive: Tally — its conditional logic is currently available free, with no limit on the number of conditions. tally.so
• Most flexible: Jotform — supports show/hide rules, multiple-field conditions, conditional required fields, and page routing. www.jotform.com
• Best for complicated branching: Cognito Forms — supports conditional fields, sections, pages, and AND/OR logic. www.cognitoforms.com
• Best if this is a marketing/CRM signup: HubSpot — conditional logic can show/hide fields and form steps, although it requires a qualifying paid HubSpot subscription. knowledge.hubspot.com
• Best-looking user experience: Typeform — its branching logic is designed for showing respondents only relevant questions. help.typeform.com

If by “signup form” you mean an actual account-registration flow (create account → ask different profile fields based on answers → save everything to your user database), rather than a generic lead/contact form, the list changes somewhat. I can narrow it down to tools that support real user accounts + conditional onboarding fields.

Yes. If by conditional signup form you mean something like:

“Are you signing up as a company or an individual?”
→ Company → show Company name, size, website
→ Individual → show Job title, interests

there are several good options.

My top picks

1. Jotform — best general-purpose choice
Jotform can show/hide individual fields or groups of fields based on previous answers. You can create rules such as IF “Account type” = Business → SHOW business fields. www.jotform.com
Jotform

2. Tally — best lightweight/affordable option
Tally supports real-time conditional logic, including showing/hiding blocks, skipping pages, routing users down different paths, and conditionally making answers required. Its documentation says conditional logic is available for free. tally.so
Tally

3. Typeform — best UX
Typeform's branching is particularly good when you want the signup experience to feel like a conversational, personalized flow rather than a traditional form. It supports skip logic and conditional branching for more complex flows. help.typeform.com
Typeform

4. Formstack — best for more sophisticated business forms
Formstack can conditionally show/hide individual fields or entire sections, which is useful when an answer should reveal a whole group of additional signup fields. www.formstack.com
Formstack

5. HubSpot — best if signup data needs to go straight into a CRM
HubSpot supports conditional logic that shows/hides fields and entire steps based on responses. The current forms editor supports this on qualifying Marketing Hub/Content Hub plans. knowledge.hubspot.com
HubSpot

If this is specifically for user account signup

There's an important distinction: if you need to actually create an account/user in your application, rather than simply collect information with a form, I'd narrow the choices differently.

For example:

Step 1: What type of user are you?
→ Student
→ Business
→ Nonprofit

Step 2: Based on that answer, collect different fields.

Step 3: Create the user account and store the appropriate profile data.

For that use case, tell me what you're building (e.g. SaaS app, marketplace, community, customer portal, or just a lead/signup form) and I can give you the 3–5 best platforms specifically for that workflow, including pricing and whether they can actually create the user account rather than just submit a form.

Yes. If by conditional signup form you mean:

“Ask what type of user you are → if A, show fields A1/A2; if B, show B1/B2; then submit the appropriate signup information”

there are several good options.

My top picks

1. Jotform — easiest overall

Jotform explicitly supports showing/hiding fields based on previous answers. For example:

“Are you signing up as an individual or a business?”
→ Individual: show name, DOB, personal address
→ Business: show company name, industry, employee count

It can also show/hide multiple fields, skip pages, and change what happens after submission. www.jotform.com

2. Tally — best if you want something lightweight

Tally's conditional logic can show/hide questions or entire blocks, skip pages, make answers conditionally required, and send users down different paths. Importantly, Tally says its conditional logic is available for free without a limit on the number of conditions. tally.so

3. Typeform — best UX

Typeform has branching logic designed specifically for showing respondents only the relevant questions and creating more sophisticated paths through a form. help.typeform.com

4. HubSpot — best if this is actually lead/customer signup

If the form needs to create/update a contact and feed a CRM, HubSpot becomes more interesting. Its multi-step forms can conditionally show or hide entire steps based on the visitor's answers. knowledge.hubspot.com

If this is for a real account signup

There's an important distinction: if you need the form to actually create an authenticated user account—rather than simply collect signup information—I'd narrow the options considerably. Form builders like Jotform/Tally are great for collecting the data, but they aren't necessarily the right underlying authentication/user-registration system.

If you tell me what you're building (e.g. SaaS signup, membership application, customer onboarding, marketplace registration, insurance application, etc.), I can recommend the best 3 options and compare conditional logic + authentication + pricing + integrations.

Yes. Many form/survey tools support conditional logic / branching, where a signup form shows different fields based on previous answers.

Good options include:

• Typeform — strong branching logic and polished signup experiences.
• Jotform — extensive conditional logic, including showing/hiding fields and changing what users see next.
• Tally — simple, modern forms with conditional logic; good for lightweight signup flows.
• Fillout — flexible conditional logic and integrations; particularly good for more complex forms.
• Formstack — robust conditional logic, useful for business/enterprise workflows.
• HubSpot Forms — useful if the signup form feeds directly into a CRM; supports dependent/conditional fields.
• Qualtrics — very powerful branching and sophisticated respondent logic, especially for research/enterprise use.
• Google Forms — supports basic branching by sending respondents to different sections based on answers, though it's less flexible than the dedicated form builders.

Example

You could have:

Are you signing up as an individual or a business?
○ Individual
○ Business

If Individual → show:

• Date of birth
• Personal interests

If Business → show:

• Company name
• Number of employees
• Industry

If you tell me what kind of signup form you're building (e.g. SaaS onboarding, event registration, marketplace, lead capture) and whether you need CRM/database integration, I can narrow this down to the best 3–5 options.

Yes. What you’re looking for is usually called conditional logic, branching logic, or adaptive forms.

Good options include:

For example, you could make:

What type of user are you?
○ Individual
○ Business
○ Nonprofit

If Business → show Company name, job title, number of employees
If Nonprofit → show Organization name, nonprofit status
If Individual → skip those fields

All of the options above can handle this type of flow. Jotform, for example, explicitly supports showing/hiding fields based on previous answers, while Tally offers its conditional logic without requiring an upgrade. www.jotform.com

My shortlist:

• Easiest overall: Jotform
• Best simple/modern option: Tally
• Best-looking user experience: Typeform
• Best for complex business workflows: Formstack
• Best for highly customized forms: Paperform

If by “signup form” you mean an actual account-registration form (creating a user account in your app/site), rather than a questionnaire that collects signup information, the answer changes somewhat—there are platforms specifically designed for conditional user onboarding/registration.

Yes. If you mean a signup/registration form where the next fields change based on earlier answers, several tools support this well.

My top picks

1. Jotform — easiest overall

You can do things like:

Are you signing up as a business or individual?
→ Business → Show Company Name, Industry, Number of Employees
→ Individual → Show Occupation, Interests

Jotform supports showing/hiding multiple fields, changing whether fields are required, and skipping pages based on answers. www.jotform.com
Jotform conditional logic

2. Tally — particularly good if cost matters

Tally has conditional logic available for free, including showing/hiding blocks, skipping pages, making fields required conditionally, and redirecting users. tally.so
Tally conditional logic

3. Typeform — best-looking/conversational

Typeform's branching logic lets you show relevant questions and create different paths based on responses. It's particularly good if you want the signup process to feel like a conversation rather than a traditional form. help.typeform.com
Typeform

One important distinction

If by "signup form" you mean an actual user account registration form—where the answers become fields on a user profile—rather than a lead/application form, the choices change somewhat.

For example, if you need:

Account type:

• Student → show School + Graduation Year
• Company → show Company Name + Job Title
• Freelancer → show Services + Portfolio URL

…and then you want those answers stored on the user's account, I'd look at WordPress Profile Builder, Memberstack, Outseta, Auth0, or a custom auth solution, rather than just a generic form builder. Profile Builder, for example, explicitly supports conditional fields on user registration/edit-profile forms. www.cozmoslabs.com

If you tell me what kind of signup you're building (e.g. SaaS, marketplace, community, event, customer onboarding) and what happens to the answers afterward, I can narrow this down to the 3 best options.

Yes. If by conditional signup form you mean “ask one question, then show different fields depending on the answer,” several tools support this well.

My shortlist

1. Fillout — best overall for flexibility
It can show/hide individual fields based on previous answers, URL parameters, integrations, calculations, etc., and supports nested condition groups. www.fillout.com
Fillout

2. Jotform — easiest traditional form builder
Its conditional logic explicitly supports rules such as: IF “Account type” = Business → SHOW “Company name,” “Tax ID,” etc. It can also show/hide multiple fields at once. www.jotform.com
Jotform

3. Tally — great if you want something lightweight
Tally supports showing/hiding blocks, skipping pages, making fields required conditionally, and redirecting users based on their answers. Its conditional logic is currently available free, with no limit on the number of conditions. tally.so
Tally

4. Typeform — best for a polished user experience
Its branching logic can route users through different questions based on their answers, making it particularly good for conversational signup/qualification flows. help.typeform.com
Typeform

If you're building an actual account signup rather than just a form

There's an important distinction. Tools like Jotform/Tally/Fillout are excellent if you need to collect registration information, but if you need to actually create a user account in your application—with email/password, authentication, profiles, roles, etc.—you'll want something more like an authentication/user-management platform or a database-backed form.

If you tell me what you're signing people up for (e.g. SaaS accounts, events, memberships, jobs, clients, volunteers), I can narrow this down to the 3 best options and compare pricing + conditional logic + account creation.

Yes. If by conditional signup form you mean something like:

“Are you a business or individual?” → Business shows company name + tax ID; Individual shows personal details

there are several good options:

My picks

1. Tally — best if you want something lightweight.
Tally can show/hide individual blocks based on answers, make fields conditionally required, and branch users to different pages. Its conditional logic is currently available on the free plan. tally.so

2. Jotform — best if the signup flow is complicated.
You can create rules like IF user selects X → show fields A, B, C, including showing/hiding multiple fields at once and skipping pages. www.jotform.com

3. Typeform — best UX.
Its branching logic lets users follow different paths based on their answers, so they don't even encounter irrelevant questions. help.typeform.com

If you're specifically looking for a signup/onboarding tool rather than a generic form builder—e.g. a form that creates an account and then sends the user into an app—tell me what you're building, and I can narrow this down to the best 3–5 options.

Yes. If by “conditional signup form” you mean “ask question A, then show different signup fields depending on the answer,” several tools support this well:

A concrete example

You could have:

“What type of account do you need?”

• Individual → show: Name, Email, Password
• Business → show: Name, Work Email, Company, Company Size, Password
• Nonprofit → show: Name, Email, Organization, EIN, Password

Tally supports showing/hiding blocks based on previous answers, and its conditional logic is currently available on its free plan. tally.so

Fillout is particularly strong if you need more complicated rules: it can conditionally show/hide fields based on previous answers, URL parameters, external data, calculations, and multiple-condition groups. www.fillout.com

Jotform has explicit “Show/Hide Field” logic and can show multiple fields when a particular answer is selected. www.jotform.com

If this is an actual user account signup

There's an important distinction: many form builders can collect signup information, but they aren't necessarily a full authentication/user-registration system.

If you're building something like:

Choose account type → collect different information → create a user account → log them into your application

I'd narrow the options differently. Tally/Fillout/Jotform are great for the form UI, but you may want something like Auth0, Clerk, Supabase, Firebase, or a native application signup flow behind it.

If you tell me what you're building (e.g. SaaS, membership site, marketplace, WordPress, Webflow, etc.), I can recommend the best 3 options specifically for that use case.

Yes. If by conditional signup form you mean something like:

“Are you signing up as an individual or a business?” → if Business, show Company Name, Company Size, Industry, etc.

several form builders support this well:

My picks

For a straightforward signup flow: Tally or Fillout.
For a highly customizable business form: Jotform.
For a beautiful, conversational onboarding experience: Typeform.

One important distinction: if you mean a true product signup/onboarding form—e.g. “What type of account are you creating?” → dynamically collect different registration information → create the user in your app—rather than just a form that collects submissions, I would narrow the list considerably.

If that's what you're building, tell me what the signup is for and what your tech stack is (e.g. Webflow, WordPress, React, Supabase, HubSpot) and I can recommend the best 3 options.