PostHog vs Amplitude
PostHog is open-source product analytics suite with session replay, feature flags, A/B testing, and surveys, while Amplitude is digital analytics platform for understanding user behavior across the full product journey. PostHog is open source and can be self-hosted, giving you full control over your data. PostHog is built for product teams that need analytics, session replay, and feature flags in one tool, whereas Amplitude targets growth teams needing advanced product analytics.
| Feature | PostHog | Amplitude |
|---|---|---|
| Free tier available | ✓ | ✓ |
| Open source | ✓ | — |
| A/B Testing | ✓ | — |
| Behavioral Analytics | — | ✓ |
| CDP | — | ✓ |
| Cohorts | — | ✓ |
| Experiments | — | ✓ |
| Feature Flags | ✓ | — |
| Product Analytics | ✓ | — |
| Session Replay | ✓ | — |
| Surveys | ✓ | — |
Pricing: Both PostHog and Amplitude are free. You can try both without spending a dollar.
Feature gaps: PostHog offers A/B Testing, Feature Flags and Product Analytics that Amplitude lacks. Amplitude brings Behavioral Analytics, CDP and Cohorts that PostHog does not have.
Team fit: PostHog is geared toward any size teams, while Amplitude is aimed at mid-size teams teams. Pick the one that matches where your team is today and where it is headed — migrating tools later is always painful.
Open source: PostHog is open source, meaning you can self-host, audit the code, and avoid vendor lock-in. Amplitude is proprietary — you are trusting the vendor with your data and uptime.
Where each tool shines: PostHog's biggest strengths are: all-in-one: analytics, session replay, feature flags, a/b tests. generous free tier (1m events/mo). Amplitude's biggest strengths are: includes behavioral analytics as a core feature, purpose-built for analytics workflows. includes cohorts as a core feature, purpose-built for analytics workflows.
Watch out for: With PostHog, users commonly note that can be overwhelming — lots of features. With Amplitude, the main complaint is that free plan exists but key features are locked behind the paid upgrade.
choose PostHog if
- You need a tool built for product teams that need analytics, session replay, and feature flags in one tool
- You need self-hosting, data sovereignty, or the ability to audit source code
- You specifically need A/B Testing and Feature Flags
- You care about generous free tier (1m events/mo)
- Your team size fits the any size profile PostHog is designed for
choose Amplitude if
- You need a tool built for growth teams needing advanced product analytics
- You specifically need Behavioral Analytics and CDP
- You care about includes cohorts as a core feature, purpose-built for analytics workflows
- Your team size fits the mid-size teams profile Amplitude is designed for
- The free tier works for you: free up to 10m events/mo
frequently asked
What is the difference between PostHog and Amplitude?
PostHog is open-source product analytics suite with session replay, feature flags, A/B testing, and surveys, while Amplitude is digital analytics platform for understanding user behavior across the full product journey. PostHog is open source and can be self-hosted, giving you full control over your data. PostHog is built for product teams that need analytics, session replay, and feature flags in one tool, whereas Amplitude targets growth teams needing advanced product analytics.
Should I use PostHog or Amplitude?
PostHog gives you open source and self-hosting; Amplitude is a managed service. Which trade-off works for you?
When should I choose PostHog over Amplitude?
Choose PostHog if You need a tool built for product teams that need analytics, session replay, and feature flags in one tool; You need self-hosting, data sovereignty, or the ability to audit source code; You specifically need A/B Testing and Feature Flags; You care about generous free tier (1m events/mo); Your team size fits the any size profile PostHog is designed for.
When should I choose Amplitude over PostHog?
Choose Amplitude if You need a tool built for growth teams needing advanced product analytics; You specifically need Behavioral Analytics and CDP; You care about includes cohorts as a core feature, purpose-built for analytics workflows; Your team size fits the mid-size teams profile Amplitude is designed for; The free tier works for you: free up to 10m events/mo.
related comparisons
Google Analytics vs PostHog · Plausible vs PostHog · Fathom vs PostHog · Umami vs PostHog · PostHog vs Mixpanel · PostHog vs Hotjar · PostHog vs Heap · PostHog vs Pirsch