PostHog bundles the things you would otherwise wire together from three vendors: event analytics, session replay, funnel and retention analysis, A/B tests, and feature flags. Because they share one event stream, you can watch a replay of the exact session that dropped out of a funnel, which is the kind of debugging that usually needs a support ticket. Generous free tier for early products.
Who it is for
A seed-stage product team that wants analytics, replay, and flags behind one SDK instead of three vendors.
Key features
- Event analytics, funnels, and retention
- Session replay linked to the same events
- Feature flags and A/B experiments
- Surveys and session-based feedback
- Self-hosted or cloud deployment
- Usage-based pricing per product
Where it falls short
Instrumenting it properly is a real project, event volume pricing gets steep as you grow, and self-hosting is a serious operational commitment rather than a checkbox.
Pricing
Free tier gives monthly allowances for events, replays, and flags separately; beyond that it is usage-based, and replay retention is the line item that grows fastest.
Prices move; the tier structure is the part that stays true. Check current pricing on PostHog.
Alternatives to PostHog
Frequently asked
Is PostHog free?
Partly. Free tier gives monthly allowances for events, replays, and flags separately; beyond that it is usage-based, and replay retention is the line item that grows fastest.
What is PostHog best for?
A seed-stage product team that wants analytics, replay, and flags behind one SDK instead of three vendors.
What are the best alternatives to PostHog?
The closest substitutes we list are Mixpanel, Microsoft Clarity and Plausible. They sit in a similar price bracket but make a different trade-off, so read the weaknesses section of each review before switching.
Which platforms does PostHog run on?
PostHog is available on Web and Self-hosted.