ChatGPT answers, unedited

Yes. For that use case, OneSignal and Customer.io are probably the two I’d look at first.

Best fit: OneSignal

OneSignal supports mobile app events → automated Journeys → in-app messages, along with push, email, and SMS. Its SDK can send custom triggers based on things users do in the app, and those triggers can drive in-app experiences. documentation.onesignal.com

For a creator launching a course, you could do:

User watches 80% of a free lesson → wait 10 minutes → in-app message: “Ready for the full course?” → click → course checkout

Or:

User visits course page 3 times but doesn't buy → enter launch sequence → in-app offer → push reminder the next day

OneSignal also recently added Events, specifically for reacting to user behavior and launching multi-step Journeys from events coming from an app, CDP, warehouse, or API. onesignal.com

Stronger if you need sophisticated lifecycle automation: Customer.io

Customer.io is particularly good if the creator wants a more elaborate funnel across in-app + email + push + other channels. It supports behavioral conditions and real-time data for personalized in-app experiences, including mobile SDKs and automated workflows. customer.io

How I'd choose

Braze is the heavyweight option: it supports real-time behavioral triggers, automated workflows, in-app messages, push, and extensive personalization. www.braze.com

For a creator/course business specifically, I'd lean OneSignal if the product is primarily a mobile app, and Customer.io if the course business has a broader web/email lifecycle around the app.

If you tell me what the mobile app is built with (React Native, Flutter, native iOS/Android, etc.) and what platform hosts the course, I can narrow this down to the best 2–3 options and show exactly how I'd wire the event → flow → in-app message architecture.

Yes. There are several tools built for exactly this pattern: track user activity in a mobile app → trigger a flow/journey → show an in-app message (and optionally push/email/SMS) based on behavior. For a creator launching a course, the best fit depends on whether you already have an app, a community platform, or just a marketing stack.

Strong options

For a creator launching a course, typical flows would look like:

• New learner signs up

• Trigger: account_created
• In-app message: “Welcome! Start with Module 1.”
• Follow-up: onboarding email sequence
• Learner watches 80% of lesson 1

• Trigger: lesson_completed
• In-app message: “You’re ready for the next challenge.”
• Offer: unlock bonus worksheet
• Learner hasn’t returned in 7 days

• Trigger: inactivity event
• In-app message: “Continue where you left off.”
• Push notification reminder
• Course launch campaign

• Trigger: app open after launch date
• In-app announcement banner
• CTA: enroll, upgrade, join live session

My shortlist for this use case

• You have a custom mobile app: Braze or Airship.
• You have a small creator app and want quick setup: Appcues or Customer.io.
• You are building on a community/course platform rather than a custom app: you may be better served by a course platform + automation layer (for example, events from your LMS into Customer.io).

The key requirement is that your app (or LMS) needs to emit useful events such as signup_completed, lesson_started, lesson_finished, quiz_passed, subscription_started, etc. The messaging tool then reacts to those events. Salesforce Mapp Docs

If you tell me what stack the creator is using (custom iOS/Android app, Kajabi/Teachable/Circle/Skool, Webflow, etc.), I can narrow this down.

Yes. If you mean “a creator has a mobile app, and wants user activity to trigger automated flows that can show messages inside the app”, there are several good fits.

Best fits

• onesignal.com — probably the closest fit if you want something relatively straightforward. It supports custom mobile events, event-driven Journeys, and in-app messages. For example: watched_lesson → wait 1 day → in-app message promoting the next lesson → if course_purchased, exit the flow. OneSignal OneSignal
• customer.io — stronger if you want sophisticated lifecycle automation across in-app + push + email + SMS. Its in-app experiences can be personalized from real-time behavioral data, and its automations can react to user activity. Customer.io Customer.io
• braze.com — the more enterprise-grade option. It supports real-time behavioral triggers, automated journeys, personalization, and rich in-app experiences. Braze Braze

For a course creator specifically

I'd model the events something like:

app_opened → welcome/onboarding message
lesson_started → contextual tip
lesson_completed → “nice work” + next lesson CTA
course_50_percent → encouragement/bonus offer
course_completed → upsell to next course
checkout_started → abandoned-checkout flow
inactive_7_days → re-engagement push/email/in-app

OneSignal is especially interesting for this use case because its current Events/Journeys tooling explicitly supports event-triggered flows and even uses course completion as an example. OneSignal

If you're asking because you're evaluating a product to build this into a creator platform, I can also compare OneSignal vs Customer.io vs Braze vs a few creator-specific tools on pricing, SDK effort, event triggers, in-app UI flexibility, and suitability for a solo creator.

Yes. Two particularly strong fits are OneSignal and Customer.io.

Best fit: OneSignal

OneSignal supports exactly the combination you're describing:

• Mobile app activity → custom events
• Event-triggered Journeys that react to those events
• In-app messages triggered by user behavior/app activity
• Push, email, SMS, and in-app messaging in the same Journey
• SDKs for iOS/Android and frameworks such as React Native/Flutter documentation.onesignal.com

For a course creator, you could build something like:

User installs app → completes onboarding → views course landing page → doesn't enroll → gets an in-app message → enrolls → receives onboarding sequence → completes Lesson 1 → gets an in-app prompt for Lesson 2 → becomes inactive → receives re-engagement.

OneSignal specifically supports event-driven Journeys, where custom events can serve as Journey entry conditions, wait conditions, exit rules, and personalization data. documentation.onesignal.com

OneSignal documentation

Also strong: Customer.io

Customer.io is arguably better if you want a more sophisticated lifecycle/marketing automation system.

Its mobile SDK lets your app identify users and send behavioral events to Customer.io, which can then trigger campaigns and in-app messages. github.com

It also supports page/screen-based in-app targeting, so you could show a message when someone reaches a particular course screen. docs.customer.io

Customer.io

Which I'd choose

OneSignal is probably the first one I'd evaluate for your specific use case because its event-driven Journeys + mobile in-app triggers map very directly to "when the learner does X, show/do Y." documentation.onesignal.com

If you tell me what the mobile app is built with (React Native, Flutter, native iOS/Android, etc.) and where the course is hosted, I can narrow this down to the best 2–3 options and explain how I'd wire the events together.

Yes. For a creator launching a course, you’re looking for a mobile engagement / customer messaging platform that can:

1. Listen to app activity events (lesson started, lesson completed, opened pricing page, watched 80% of a video, abandoned checkout, etc.)
2. Trigger automated flows/journeys
3. Show in-app messages (banners, modals, coach marks, announcements)
4. Ideally connect with push, email, SMS, and analytics

Some strong options:

For a solo creator or small course company, I’d usually narrow it to:

1. Customer.io (most flexible)

Good if your course app has events like:

• signed_up
• completed_lesson
• stopped_watching
• visited_sales_page
• started_free_trial
• purchased_course

Example flow:

User completes Lesson 3 → wait 24 hours → show in-app message: “Ready for the next module?” → if no activity after 3 days → send email reminder → if they return → offer bonus lesson.

docs.customer.io

2. Appcues (best for learning-product UX)

Good if the goal is more inside-the-app guidance:

• onboarding new students
• pointing people to course modules
• showing launch announcements
• nudging users when they reach milestones

It supports mobile flows triggered by sessions, screens, and custom events. docs.appcues.com

3. OneSignal (best if you mainly need push + simple in-app)

Good for:

• launch countdowns
• “new lesson available” alerts
• re-engagement notifications

A typical creator stack might be:

• Course platform/app → sends user events
• Customer.io or Braze → automation engine
• OneSignal → push delivery
• Analytics tool → tracks conversion

If you mean a creator launching a course inside an existing app (like a community app) versus building their own iOS/Android course app, the best choice changes quite a bit.

Yes. If the creator has a mobile course app and wants flows like:

“User completes Lesson 2 → show an in-app upsell”
“User watches 80% of the webinar → show a coaching offer”
“User hasn’t opened the app for 7 days → trigger a re-engagement sequence”

there are several good options.

Best fits

• Customer.io — probably my first choice for a creator/course business that wants event-triggered journeys + in-app messages + email/push/SMS. It supports event-triggered automations and in-app messages on mobile, with real-time behavioral data and audience conditions. customer.iodocs.appcues.com
• Appcues — particularly good if the priority is in-app UX rather than a full marketing automation stack. Its mobile flows can trigger from screen activity or custom in-app events. docs.appcues.com
• Airship — strong for sophisticated mobile-first behavioral messaging. Its In-App Automation can react to sequences of app events in real time, including screens, purchases, and video views. www.airship.comdocs.appcues.com
• CleverTap — another strong option for real-time event-based mobile engagement, including triggering an in-app message immediately after a user action rather than waiting for another app launch. docs.clevertap.com
• Pushwoosh — interesting specifically for education/course apps; it explicitly supports event-based messaging around lesson completions, quizzes, deadlines, streaks, etc., across push, in-app, and email. www.pushwoosh.com

For a course creator, I'd narrow it to

The key technical requirement is that the course app needs to send behavioral events to the platform—for example lesson_started, lesson_completed, quiz_failed, course_50_percent, checkout_started, etc. The platform then uses those events as triggers and can decide what message/flow to show. Customer.io, Appcues, and Airship all support this general model. docs.appcues.com

If you tell me what the creator's course is built on (e.g. Kajabi, Teachable, Circle, custom iOS/Android app, web app), I can narrow this down to the 2–3 tools that actually fit that stack, including pricing and how the event integration would work.

Yes. For a creator launching a course inside a mobile app, OneSignal is probably the closest fit, with Customer.io and Braze as stronger alternatives if you need more sophisticated lifecycle automation.

Best fits

OneSignal stands out for your use case. Its current Events/Journeys system can react to app behavior and trigger multi-step campaigns across in-app, push, email, and SMS. Its docs even use course completion as an example: an app fires a course_completed event, which enters a Journey and can immediately congratulate the student and recommend the next course. documentation.onesignal.com

You can also fire custom in-app triggers directly from the mobile SDK, so something like:

User opens course → views lesson 1 → abandons → comes back → completes lesson → show contextual message

is feasible. documentation.onesignal.com

OneSignal Events

What I'd build for a course creator

For example:

Event: course_viewed
→ If they haven't purchased → in-app message: “Want to see what’s inside?”

Event: course_purchased
→ Immediately show onboarding message
→ Push/email reminder 24h later

Event: lesson_started
→ Don't interrupt them

Event: lesson_completed
→ In-app: “Nice work. Lesson 2 is ready.”

Event: 3_lessons_completed
→ Give encouragement / milestone CTA

Event: 7_days_since_purchase + <30% complete
→ Re-engagement flow

Event: course_completed
→ Celebration message + upsell/recommendation for the next course

OneSignal supports both event-triggered Journeys and in-app messages, including custom triggers, personalization, frequency controls, and deep links. documentation.onesignal.comdocumentation.onesignal.com

When I'd choose the others

Customer.io is particularly attractive if the creator wants sophisticated lifecycle automation around the course—event properties, branching, frequency limits, and behavioral sequences. Its event-triggered automations can react to actions in an app or website and filter on event properties. docs.customer.io

Customer.io

Braze is the heavyweight option. It has real-time behavioral triggers, sophisticated journeys, personalization, experimentation, and rich in-app formats. It's excellent if this is becoming a substantial consumer app/business, but I'd generally consider it overkill for a small creator initially. www.braze.com

Braze

My pick: If the requirement is specifically “mobile app activity → automated flow → contextual in-app message”, I'd start by evaluating OneSignal. If you expect a much more complex customer lifecycle/CRM layer, evaluate Customer.io alongside it.

Yes. Customer.io is probably the closest fit for what you’re describing.

It supports:

• Mobile-app activity as triggers — e.g. course_viewed, lesson_started, lesson_completed, checkout_started, course_purchased.
• Event-triggered multi-step flows with delays, branching, conditions, and conversion goals. customer.io
• In-app messages delivered inside the mobile app, including banners, modals, tooltips, surveys, and embedded experiences. customer.io
• Push, email, SMS + in-app in the same journey, so you can switch channels depending on what the learner does. customer.io
• Mobile SDKs for iOS, Android, React Native, and Expo, so it can actually respond to activity inside a creator's app. docs.customer.io

For a creator launching a course, you could build something like:

User watches launch teaser → joins waitlist → gets in-app announcement → opens course page → doesn't purchase → reminder → purchases → onboarding flow → hasn't started lesson 1 → in-app nudge → completes lesson 1 → celebrate + recommend lesson 2.

Another strong option: Braze

Braze is arguably more powerful for sophisticated mobile engagement. It supports real-time behavioral triggers, in-app messaging, and visual journey orchestration. www.braze.com

The tradeoff is that Braze is generally aimed more at larger/enterprise-grade customer engagement teams, whereas Customer.io is a more natural fit if you're building this for an individual creator or smaller course business.

My shortlist:

1. Customer.io — best fit for a creator/course launch.
2. Braze — best if the app/user base is large and you need sophisticated mobile lifecycle marketing.
3. If the creator doesn't actually have their own mobile app, I'd look at a different stack entirely, because these tools become much more compelling when you control the app and can emit behavioral events.

If you tell me what the creator's app/course platform is built on (e.g. React Native, Flutter, Kajabi, Circle, custom app, etc.), I can narrow this down to the best 2–3 options and show exactly how the event → flow → in-app message setup would work.

Yes. If you mean “a creator has a mobile course app, and wants flows like watched lesson → show an in-app prompt, started checkout → remind them, completed module → upsell/coaching, etc., there are several tools that fit.

Best fits

1. OneSignal — probably the simplest fit

• Tracks custom events from a mobile app.
• Can trigger Journeys from user behavior.
• Supports in-app messages, push, email, and SMS.
• In-app messages can be triggered by custom app behavior.
• You can personalize messages with event/user data. documentation.onesignal.com

For example:

lesson_completed → wait 5 min → in-app message: “Ready for the next lesson?” → if no activity → push/email reminder → if course_completed → offer advanced course.

2. Customer.io — better for sophisticated lifecycle automation
Customer.io supports behavioral events and personalized in-app messages, including messages based on activity inside or outside the app. docs.customer.io

I'd consider this if the creator wants fairly elaborate funnels and already has a backend/event system.

3. Braze — strongest enterprise option
Braze is built specifically around real-time behavioral triggers, journeys, personalization, and in-app messaging. www.braze.com

It's powerful, but probably overkill for a solo creator or small course business.

One important distinction

If you're looking for the course platform itself to do this—rather than adding a messaging/engagement layer—things like Kajabi are a different category. Kajabi has creator/mobile functionality and notifications, but it isn't equivalent to a dedicated behavioral-engagement system like OneSignal or Braze. help.kajabi.com

For a creator launching one course, I'd start with OneSignal if they have (or can build) a mobile app. It gives you the core loop:

mobile activity → event → segmentation/logic → in-app message → subsequent event → next step

If you tell me what the mobile app is built with (e.g. Flutter, React Native, native iOS/Android) and what course platform/backend they're using, I can narrow this down to the best 2–3 options and show exactly how I'd architect the event-triggered funnel.

Yes. For that exact use case, I’d look at Customer.io and OneSignal first, with Braze as the more enterprise-oriented option.

Best fits

1. Customer.io — probably the closest match

• Your mobile app sends behavioral events such as lesson_completed, course_page_viewed, checkout_started, or course_purchased.
• Those events can trigger automated workflows.
• The workflow can then show an in-app message, as well as send email, push, SMS, or webhooks. docs.customer.io
• In-app messages can be targeted to particular screens/pages, which is useful for contextual course-launch prompts. docs.customer.io

For a creator launching a course, you could build something like:

Viewed launch page → didn't buy → next app session → in-app "Course opens Friday" → push/email → purchased → in-app onboarding message

Customer.io

2. OneSignal — excellent if mobile messaging is the core

• Supports custom app-activity triggers and event-triggered Journeys.
• In-app messages can be triggered from user behavior and displayed inside the mobile app.
• Journeys can combine in-app, push, email, SMS, etc. documentation.onesignal.com

This is particularly attractive if the creator already has an app and wants relatively straightforward lifecycle marketing.

OneSignal

3. Braze — powerful, but probably overkill for an individual creator
Braze supports real-time behavioral triggers, in-app messaging, personalization, and sophisticated automated customer journeys. www.braze.com It's a strong choice if this is becoming a substantial consumer app/business rather than a lightweight creator stack.

Braze

For a course creator specifically

I'd lean Customer.io if the requirement is:

"When someone does X inside my app, automatically decide what to do next and show them a contextual message."

For example:

One important distinction: in-app messaging isn't the same as push. The user generally has to be in/open the app for the in-app message to appear; Customer.io and OneSignal both support workflows that bridge this with push/email. docs.customer.io

If you tell me what the creator's mobile app is built with (Flutter, React Native, Swift/Kotlin, etc.) and where the course checkout lives (Stripe, Kajabi, Teachable, custom, etc.), I can narrow this down to the best 2–3 options and show you the actual event → automation architecture.

Yes. If the creator has a mobile app for the course, there are several platforms that fit this very well.

Best fits

Customer.io — probably the closest match for what you're describing. It can ingest app events and use them as triggers in visual workflows, then send in-app messages, push, email, SMS, etc. You can branch based on behavior and wait for subsequent events. docs.customer.io

For a course launch, you could build flows like:

User opens course app → views launch module → doesn't enroll → wait 1 day → in-app message "Want the early-bird price?" → if enrolls, stop → otherwise send push/email.

OneSignal — especially attractive if the priority is mobile engagement. Its Events functionality can trigger Journeys from app behavior, including actions or drop-offs, and it supports in-app, push, email and SMS. onesignal.com

Braze — the more enterprise-grade option. It supports real-time behavioral triggers, custom events, sophisticated journey logic, and rich in-app formats such as modals, banners, surveys and Content Cards. www.braze.com

For a creator launching a course

I'd think about it this way:

One important distinction: in-app messaging requires an SDK in the mobile app. For example, Customer.io supports iOS, Android, React Native, Expo and Flutter SDKs. docs.customer.io

If you tell me what the creator's app/course is built with (e.g. Flutter, React Native, Kajabi, custom app, Circle, etc.), I can narrow this down to the 2–3 tools that would actually work with their stack, including pricing and how I'd architect the launch flows.

Yes. For that use case, I’d look at OneSignal and MoEngage first.

Best fit: OneSignal

OneSignal supports mobile-app behavioral events, event-triggered Journeys, and in-app messages. Its SDK can fire custom triggers based on actions inside the app, while Journeys can orchestrate follow-up messaging across in-app, push, email, and SMS. documentation.onesignal.com

For a creator launching a course, you could do things like:

• User watches the course trailer → show an in-app enrollment CTA.
• User views the pricing page but doesn't buy → send a reminder later.
• User purchases → show an in-app “Start Lesson 1” message.
• User completes Lesson 1 → trigger encouragement + Lesson 2 prompt.
• User hasn't opened the course for 3 days → start a re-engagement sequence.
• User reaches 80% completion → show an upsell for coaching/community.

OneSignal's custom triggers are specifically designed to make an in-app message appear when the app records a particular user action. documentation.onesignal.com

Strong alternative: MoEngage

MoEngage is arguably more powerful if you want sophisticated lifecycle automation. Its mobile in-app campaigns can trigger on custom events, specific screens, or session starts, with event attributes and AND/OR conditions. help.moengage.comdocumentation.onesignal.com

It also supports event-triggered campaigns where conditions such as:

“User viewed Course X AND hasn't purchased”

can initiate messaging, with additional event properties and timing logic. www.moengage.com

Which I'd pick

The key architectural requirement is that the mobile app needs to emit meaningful events—e.g. course_viewed, lesson_started, lesson_completed, checkout_started, course_purchased. Both platforms can then use those events to drive the messaging experience. help.moengage.comdocumentation.onesignal.com

If you tell me what the creator's app is built with (Flutter, React Native, Swift/Kotlin, etc.) and where the course/payment system lives, I can narrow this down to the best 2–3 options and show what the event → message flow would look like.

Yes. What you’re describing is usually called event-driven lifecycle messaging or behavior-based engagement: a user does something in a mobile app → a flow evaluates that event/segment → the app shows an in-app message (and optionally sends push/email/SMS). Several tools support this pattern. docs.appcues.comwww.airship.com

For a creator launching a course, these are the strongest fits:

A typical creator course launch setup might look like:

1. Track mobile events
   • app_opened
   • created_account
   • watched_preview
   • completed_lesson_1
   • started_checkout
   • purchased_course

2. Create triggered flows
   • New signup → welcome walkthrough
   • Watched preview → “Full course opens Friday”
   • Added to cart → reminder after 24 hours
   • Completed first lesson → encourage next lesson
   • Inactive for 7 days → re-engagement message

3. Use in-app messages for high-intent moments
   • Banners
   • Modals
   • Tooltips
   • Course announcements
   • Upgrade prompts

If the creator doesn’t already have a mobile app and is launching a course through a web platform (Kajabi, Teachable, Thinkific, etc.), the best tool choice may be different. If they do have an iOS/Android app, I’d shortlist Appcues, Airship, Braze, or OneSignal depending on budget and technical resources. docs.appcues.comwww.airship.com

A useful question to narrow it down: is this for a native mobile course app (iOS/Android), or a creator platform/course website with a mobile app wrapper?

Yes. Customer.io is probably the closest fit if the creator has a mobile app and wants behavioral automation around a course launch.

It supports:

• Mobile SDK event tracking — app opens, custom events, user activity, etc. docs.customer.io
• Event-triggered journeys/flows — so something like joined_waitlist, watched_preview, or purchased_course can start an automation.
• In-app messages — banners, modals, and other messages displayed inside the app, personalized based on user activity. docs.customer.io
• Push + email + SMS alongside in-app, which is useful for a launch sequence. customer.iowww.braze.com
• Deep links can send someone from a push message directly to a particular screen in the app. customer.iowww.braze.com

For a course creator, you could build something like:

User watches 80% of free lesson → wait 1 day → in-app message: “Ready for the full course?” → if no purchase → push/email → if purchase → onboarding sequence.

Other strong option: Braze

Braze is another very capable choice, particularly if the app has substantial engagement. It supports custom-event-triggered Canvas flows and sophisticated in-app messaging. www.braze.com

My quick take:

• Customer.io → better fit for a creator/small team that wants straightforward event → automation → message workflows.
• Braze → better if you're building a highly sophisticated consumer app with lots of behavioral segmentation and experimentation.
• If the “app” is actually a course platform rather than a custom mobile app, there are other tools I'd consider before either of these.

If you tell me what platform the creator's course/app is built on (e.g. Kajabi, Circle, Mighty Networks, custom React Native app, etc.), I can narrow it down to the best 2–3 options.

Yes. OneSignal is probably the closest fit for what you described, especially if the creator has a mobile app and wants to build course-launch automations around what learners do in the app.

OneSignal supports:

• Mobile activity → event-triggered flows: send custom events such as course_viewed, lesson_started, checkout_started, or course_completed and use them to enter or branch Journeys. documentation.onesignal.comonesignal.com
• In-app messages: banners, modals, carousels, announcements, etc., displayed while the learner is in the app. onesignal.mintlify.appwww.braze.comsupport.iterable.com
• Behavioral triggers: an in-app message can be triggered by custom SDK events/app behavior rather than simply showing on a schedule. documentation.onesignal.com
• Multi-channel flows: combine in-app with push, email, and SMS. documentation.onesignal.comonesignal.com
• Course-specific journeys: their docs actually use course completion as an example of an event that can trigger a Journey. documentation.onesignal.com

For a creator launching a course, you could do something like:

Learner watches launch teaser → opens course page → doesn't purchase → gets in-app reminder → purchases → gets onboarding message → starts first lesson → gets progress nudges → completes course → gets upsell/review message.

Other strong options

If this is for a creator rather than a large company, I'd start with OneSignal or Customer.io. OneSignal is particularly attractive if the core requirement is "when this happens in my app, immediately show/send this." Customer.io becomes more compelling if the creator wants a sophisticated CRM/lifecycle system surrounding the course.

If you tell me what the creator's app/course platform is built with (e.g. React Native, Flutter, Swift, Kajabi, Circle, custom app), I can narrow this down to the best 2–3 options and explain the integration architecture.