PostHog
Open-source product analytics, replay, flags and experiments
- Researched profile
- Free plan
- Open source
What users say
1,054 reviews on 1 site
- Starting price
- Free tier; usage-based pricing above it
- Free option
- Free plan
- Pricing
- Free plan + paid
- Licence
- Open source
- Deployment
- Web, Cloud (US and EU), Open source
- Integrations
- 5 listed
The lean-stack take
In build-measure-learn terms, it covers the measure and learn steps in one tool. Teams release behind flags, run experiments and watch real user behavior. The free tier includes 1M analytics events and 5,000 session recordings a month.
Best for
Product teams that want analytics, replay, flags and experiments in one tool with a monthly free allowance.
Watch out for
Pricing is usage-based above the free allowances, so set billing limits and estimate event volumes first.
About
About PostHog
PostHog is an all-in-one product platform that combines product analytics with web analytics, session replay, feature flags, A/B testing and surveys. Its core is open source under the MIT license.
Written by lean-stack from PostHog's public pages. Vendors can replace it with their own description by claiming this profile.
Features
What PostHog offers
Product analytics
Trends, funnels, retention and SQL access on event data.
Web analytics
Dashboards for website traffic and behavior.
Session replay
Recordings of user sessions with event timelines, plus heatmaps.
Feature flags
Release features to some users first, with multivariate options.
Experiments
A/B tests that measure the effect of a change on chosen metrics.
Surveys
Ask users questions inside the product.
Data warehouse
Import data from sources such as Stripe, HubSpot and Zendesk and query it with SQL.
Error tracking and more
Error tracking, logs, workflows and LLM observability, per the vendor.
Lean techniques supported
The lean practices PostHog is built to support.
Pricing
PostHog pricing and plans
Checked on the vendor's pricing page, October 3, 2026
Free tier
$0
Monthly allowance
- 1M analytics events per month
- 5,000 session recordings per month
- 1M feature flag requests per month
- 1,500 survey responses per month
- Unlimited team members
Pay as you go
Usage-based
Monthly, no minimum
- Free allowances still apply each month
- Billing limits to control spend
No minimum spend or annual contract. You can set billing limits per product. Prices change often, so confirm them with the vendor.
Strengths and limitations
What stands out, and what to watch
Strengths
- Free tier with 1M events and 5,000 recordings a month
- Analytics, replay, flags, experiments and surveys in one tool
- Open-source core under the MIT license
- Cloud hosting in the US or EU
- No minimum spend, with billing limits
Limitations
- Usage-based bills can grow with traffic
- Needs developer setup through SDKs
- Many products to learn
Based on the vendor's published plans and documentation, not a hands-on test.
Fit
Is PostHog right for your team?
A good fit if…
- You want to measure what users do after a release
- You run experiments behind feature flags
- You want one tool instead of several
- You need EU data hosting
Look elsewhere if…
- You need a no-code testing tool for marketers
- You cannot add SDKs to your product
- You want a fixed annual price
Integrations
Connects with
- Stripe
- HubSpot
- Zendesk
- SQL
- Client and server SDKs
From the vendor's own integrations list.
Reviews
What PostHog users say
From public review sites, checked October 3, 2026
Ratings and mention counts as published by each site. We link to the reviews rather than copy them, and we don't average or adjust the numbers.
Similar tools
PostHog alternatives
GrowthBook
Free plan + paid
Open-source, warehouse-native experimentation and feature-flag platform with Bayesian and frequentist stats engines.
Optimizely
Price on request
Enterprise digital experience platform offering web and feature experimentation alongside CMS and personalization.
| Tool | Pricing | Starting price | Free plan or trial | Deployment |
|---|---|---|---|---|
| PostHog | Free plan + paid | Free tier; usage-based pricing above it | Free plan | Web, Cloud (US and EU), Open source |
| GrowthBook | Free plan + paid | Free; Pro $40 per seat/month | Free plan | Web, Self-hosted |
| Optimizely | Price on request | Quote-based | None listed | Web |
From each vendor's published pricing. Check current prices on their sites.
FAQ
PostHog: common questions
Is PostHog free?
Is PostHog open source?
Where is PostHog data hosted?
Does PostHog do A/B testing?
How does PostHog pricing work?
For the PostHog team
Claim this profile
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Claim PostHogSources, checked October 3, 2026
Listed October 2, 2026.