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testcritic

Heap vs Amplitude

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

Free tier available

Free tier

Free tier available

Free tier

What drives the bill

The metric that actually scales your invoice.

Paid tiers are quote-based by session volume.

Paid plans are quote-based on monthly tracked users and events; enterprise contracts are substantial.

Free tier

Free plan with a monthly session limit.

Free plan with a monthly event allowance suitable for early-stage products.

Open source

Self-hostable

No-code authoring

Languages

JavaScriptSwiftKotlin
JavaScriptTypeScriptPythonJavaSwiftKotlinGo

Platforms

WebiOSAndroid
WebAPIiOSAndroid

Fits teams

Scale-up / mid-marketEnterprise
StartupScale-up / mid-marketEnterprise

Adoption

Widely used

Contentsquare · since 2013

Category standard

Amplitude · since 2012

Strengths

  • Retroactive event definition eliminates 'we didn't track that' entirely.
  • Very fast time to first insight — no instrumentation project required.
  • Warehouse sync for teams that want the raw data.
  • The deepest retention and cohort analysis in mainstream product analytics.
  • Good free tier for early-stage products.
  • Strong data-governance tooling for event taxonomy.

Limitations

  • Autocaptured data needs governance or the event list becomes unusable noise.
  • Session-based pricing on high-traffic products.
  • Acquisition means overlap with Contentsquare's own products.
  • Requires deliberate event instrumentation — nothing works without it.
  • Enterprise pricing rises steeply with tracked users.
  • Replay and experimentation are newer and less mature than the analytics core.

Best for

Product teams that want analytics without an instrumentation backlog.

Product teams that need rigorous behavioural analysis over time.

All of these integrate with: Segment, Snowflake, Salesforce, Slack.

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