Answers that mention Moz

For an ecommerce store with ~5,000 keywords that you want checked every day, I’d shortlist AccuRanker first, with STAT as the enterprise/API-heavy alternative.

My ranking

1. AccuRanker — my pick.
It is specifically built around rank tracking rather than treating it as one feature among many. AccuRanker says it can track millions of keywords across hundreds of domains, with rankings updated every 24 hours; it also supports on-demand refreshes and an API with unlimited calls. AccuRanker AccuRanker AccuRanker

That combination is particularly attractive for ecommerce: 5,000 keywords × 365 days means 1.825 million keyword observations/year, so reliability and data access matter more than having another dozen SEO-suite features.

2. STAT — best if you have a data/BI team.
STAT is designed for very large-scale SERP monitoring and an API-first workflow. It makes more sense if you want to pipe ranking/SERP data into your own warehouse, dashboards, or analytics infrastructure rather than primarily working inside the vendor UI. CrowdReply

3. Semrush — best all-around alternative.
If you're already using Semrush for keyword research, competitive analysis, site audits, etc., its rank tracker supports daily tracking and its Advanced tier is listed at 5,000 tracked keywords. Serpstracker

4. Ahrefs — good, but I wouldn't choose it specifically for this requirement.
Ahrefs Advanced supports 5,000 tracked keywords, but its normal Rank Tracker frequency is weekly; daily updates require its Project Boost add-on. Its Enterprise tier starts at 10,000 keywords and can add more. Ahrefs Ahrefs Help Center

What I'd buy

If this is one ecommerce domain + ~5,000 keywords + daily Google rankings, I'd go:

AccuRanker → best fit

If you're building an internal SEO data platform or need hundreds of thousands/millions of keywords across many markets, I'd investigate:

STAT → best enterprise-scale architecture

If your team already lives in an SEO suite:

Semrush → best convenience

One important caveat: don't evaluate these solely on the advertised keyword limit. For ecommerce I'd test desktop vs. mobile, country/location granularity, SERP features, competitor tracking, historical retention, API/export throughput, and how missed/failed daily checks are handled. Those details can matter more than whether a plan says "5,000 keywords."

For quarterly SEO reporting, you’ll want a rank tracker that does more than show current positions — look for historical SERP snapshots, visibility trend charts, position distribution, competitor movement, annotations, and exportable dashboards. These are the strongest options:

Best choices by reporting need

For polished quarterly client reports

1. Semrush

• Good executive dashboards.
• Historical comparisons and growth reporting.
• Useful when you need to explain why rankings changed (competitors, keywords, traffic trends). Semrush Semrush
• Ahrefs

• Better when the report needs deeper SERP storytelling: - “These keywords moved from positions 11–20 into the top 10.”
• “Competitor X gained visibility after a content update.”
• “SERP features changed over the quarter.” Ahrefs Ahrefs Help Center

For SEO analysts who want the clearest movement charts

• Ahrefs Rank Tracker is particularly strong because it provides ranking history graphs, position distribution, SERP feature tracking, and competitor comparisons. Ahrefs

For agency reporting at scale

• SE Ranking or Semrush are often easier to operationalize because of reporting workflows and client-facing dashboards.

Metrics I’d include in a quarterly SERP movement report

• Average ranking position change
• % of keywords in: - Top 3
• Top 10
• Top 20
• Top 100
• Visibility/share-of-voice trend
• New page-one keywords
• Lost rankings
• Biggest movers (wins and losses)
• SERP feature ownership changes
• Competitor visibility changes
• Annotated timeline: - Google updates
• content launches
• technical fixes
• link campaigns

For most quarterly SEO decks, I’d shortlist Ahrefs + Semrush: Ahrefs for deep SERP movement analysis, Semrush for broader marketing reporting and stakeholder-friendly dashboards. Ahrefs Semrush