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testcritic

Mixpanel vs FullStory

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

Quote on request

Quote only

What drives the bill

The metric that actually scales your invoice.

Growth now starts at $0 and scales with event volume up to 20M events a month, with the first million free; annual billing saves around $480 a year. Enterprise is quote-based. Event-volume pricing stays generous for early products but climbs with a chatty event schema.

Quote-based annual contracts priced by session volume. Among the more expensive tools in the category.

Free tier

Free forever, up to 1M events a month.

Free plan with limited monthly sessions.

Open source

Self-hostable

No-code authoring

Languages

JavaScriptTypeScriptPythonJavaSwiftKotlinPHP
JavaScriptSwiftKotlinCodeless

Platforms

WebAPIiOSAndroid
WebiOSAndroid

Fits teams

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

Adoption

Category standard

Mixpanel · since 2009

Widely used

FullStory · since 2014

Strengths

  • Genuinely self-serve — product managers build their own reports without help.
  • Large free tier that carries an early-stage product a long way.
  • Fast query performance on large event volumes.
  • Retroactive analysis is a genuine capability difference, not a marketing angle.
  • Excellent search: find the eleven sessions where a specific error occurred in checkout.
  • Strong privacy controls with element-level exclusion rules.

Limitations

  • Requires disciplined event instrumentation and naming.
  • Weaker on user-level qualitative investigation than replay tools.
  • Costs scale with event volume, which grows faster than user count.
  • Expensive, with opaque quote-based pricing.
  • Capturing everything raises data-governance questions that need answering up front.
  • Meaningful learning curve to use the search language well.

Best for

Product teams that want fast, self-serve behavioural reporting.

Product and support organisations that need to investigate specific user problems in depth.

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

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