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From FreeFree planG2 4.5 · 1,054 reviews

Product engineers and startups that already use, or want, PostHog for analytics and want experiments on the same events.

Visit PostHog ↗See full comparison

Quick overview

Pricing
Free up to 1M events/month; then usage-based
Plans
USD, excl. tax. Free every month: 1M analytics events, 5K session recordings, 1M feature flag requests, 100K exceptions, 1,500 survey responses (free plan: 1 project, 1-year retention). Pay-as-you-go: analytics events $0.00005 each from 1M to 2M, $0.0000343 from 2M to 15M, lower above; identified-user events cost extra. 6 projects and 7-year retention when paying. Billing limits per product. Self-hosted hobby deployment free (MIT, unsupported).
G2 rating
4.5 / 5.0
Comparisons
Featured in 3 comparisons

Key features

  • Experiments built on feature flags
  • Bayesian and frequentist engines, optional sequential testing
  • CUPED variance reduction and holdouts
  • Session replays per variant and product analytics in one tool
  • No-code web experiments through the PostHog toolbar (beta)

Pros

  • 1M free flag requests every month
  • Experiments, analytics and replays share one event stream
  • Bayesian, frequentist and sequential options documented
  • No contract; billing limits stop surprise bills

Cons

  • No-code web experiments are still marked beta
  • Docs warn single-page apps may overwrite no-code changes
  • Usage pricing across several products takes work to forecast

PostHog in our comparisons

Analytics & BI

Best A/B Testing Software

Choose Statsig if you want to test web pages and product features in one tool with a capable free plan. Choose GrowthBook if your metrics live in a data warehouse, and Optimizely if you run an enterprise program.

+2
Emily RodriguezUpdated October 2026
Analytics & BI

Google Analytics 4 alternatives

Switch to Plausible if you want a simple, cookieless, EU-hosted GA4 replacement. Pick Matomo for GA-level depth with data ownership, or PostHog for product analytics.

+2
Emily RodriguezUpdated October 2026
Analytics & BI

Hotjar alternatives

Pick Microsoft Clarity if you want heatmaps and recordings for free. Stay with Hotjar, now Contentsquare, if you already use it and want a growth path. Choose Mouseflow for a like-for-like swap with clear prices.

+2
Emily RodriguezUpdated October 2026