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testcritic

Convert Experiences vs Statsig

Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.

Entry price

From $299 per month (Growth, paid annually, 100k tested users; $399 monthly)

Trial only

Free tier available

Free tier

What drives the bill

The metric that actually scales your invoice.

Priced only on tested traffic — unlimited experiments, domains and users at every tier. Growth is $299/month paid annually ($399 monthly) for 100k tested users; Pro starts around $420/month annually.

One of the most generous free tiers in developer tooling; paid usage is billed on analytics events, not seats.

Free tier

15-day trial.

Generous free tier including unlimited feature flags and a large monthly event allowance.

Open source

Self-hostable

No-code authoring

Languages

JavaScriptCodeless
JavaScriptTypeScriptPythonJavaC#GoRubySwiftKotlin

Platforms

Web
WebAPIiOSAndroid

Fits teams

StartupScale-up / mid-market
StartupScale-up / mid-marketEnterprise

Adoption

Emerging

Convert Insights · since 2010

Widely used

Statsig (Amplitude) · since 2020

Strengths

  • Unlimited experiments and seats, so nobody rations testing to save licence cost.
  • Serious privacy posture with EU hosting and no data resale.
  • Transparent, published pricing.
  • Statistics engine is genuinely strong — sequential testing and CUPED are not marketing veneer.
  • Flags, experiments and analytics in one system removes a whole class of integration work.
  • Warehouse-native mode satisfies data-governance requirements.

Limitations

  • Client-side only — no server-side experimentation.
  • No feature-flag capability.
  • Smaller vendor with a modest ecosystem.
  • Event-based pricing can escalate sharply on high-volume products.
  • Broad surface area means a real learning curve.
  • Changed hands twice in under a year — OpenAI acqui-hired the founding team in September 2025, and Amplitude took over the product and brand in May 2026, so the roadmap is still settling.

Best for

Mid-sized e-commerce teams that want unlimited client-side testing with clean privacy handling.

Product teams that want experimentation and analytics to share one source of truth.

All of these integrate with: Segment.

Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.