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PostHog

PostHog is an all-in-one open-source product analytics platform that bundles product analytics, session replay, feature flags, A/B testing, surveys, and data warehouse. You install everything at once and get a complete view of what your users are doing — no more juggling 8 different tools.

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Review by a Growth Engineer

My verdict: The tool that replaced my entire analytics stack in a single 8-minute installation.

Before PostHog, my analytics stack looked like a patchwork: Google Analytics for traffic, Hotjar for replays, a feature flag tool here, an A/B testing thing there. I used to spend days writing tracking plans, syncing data between tools, paying 4 different invoices. PostHog simplified everything. One Claude Code agent, 8 minutes of installation, and I have a complete view of what my users are doing.

What really makes the difference is the all-in-one approach designed for devs. Product analytics, session replay, feature flags, A/B testing, surveys — everything is natively integrated. No tinkering to make tools talk to each other. And the 1M events/month free tier is generous enough that most startups never have to pay.

What I like less: PostHog isn't made for those allergic to code. Installation requires being technical or having a dev on hand. The interface can also feel overwhelming at first — there are so many features it takes time to find your way around. If you're looking for plug-and-play no-code, look elsewhere.

My advice: If you have access to Claude Code or a dev, go for it. Installation has become trivial and the ROI is immediate. Start with product analytics and session replays, then explore feature flags once you're comfortable. The free tier is enough to test for months before deciding whether you want to pay.

Why add it to your stack?

PostHog has completely transformed how I approach product AND marketing analytics. Before, I used to spend days writing complicated tracking plans, juggling between Google Analytics, Hotjar, and separate feature flag tools. Now, a Claude Code agent runs locally and completes the entire installation in 8 minutes. It's become my must-have tool: a single source of truth to understand what my users are doing.

What you can do with it

  • 1Set up complete tracking on your SaaS in minutes with Claude Code agent
  • 2Analyze conversion funnels and identify where you're losing users
  • 3Watch session replays to understand friction points
  • 4Deploy feature flags to test in production without risk
  • 5Run A/B tests on your key features
  • 6Collect user feedback with in-app surveys

What it does

  • Product Analytics with funnels, retention, and user paths
  • Session Replay to see exactly what your users do
  • Feature Flags to deploy safely
  • Native A/B Testing built-in
  • In-app Surveys for user feedback
  • Data Warehouse to centralize all your data
  • LLM Analytics to track your AI prompts and models

How much?

Starting at Free (1M events/month)

Usage-based model with a very generous free tier. 1 million analytics events free per month, 15K session replays free. Beyond that, degressive pricing ($0.00005/event for 1-2M, down to $0.000009 for 250M+). Optional add-ons: HIPAA compliance at $250/month, enterprise features at $2000/month. Over 90% of companies use PostHog for free.

The detailed verdict

Do I really need this?

For me, it's become an absolute must-have. If you're building a digital product and want to understand your users, PostHog is THE solution. Having analytics, replays, feature flags, and A/B tests in one place is a game-changer. It's the tool that was missing between 'no analytics' and 'Amplitude at $50K/year'.

Does it play nice with my stack?

Integrations are excellent. Native SDKs for React, Next.js, Node, Python, and 20+ others. The API is well-documented and lets you send events from any source. The AI agent toolkit even lets you integrate PostHog into your LLM workflows. Compatible with n8n, Segment, RudderStack.

Is it easy to pick up?

This is the relative weak point. PostHog isn't a no-code tool you install in 2 clicks. You either need to be technical or have access to a dev. The good news: with Claude Code, installation has become trivial (8 minutes). Documentation is comprehensive but the learning curve is real — expect a few hours to master the basics.

Is the UX any good?

The interface is powerful but requires some adjustment time. The dashboard can feel overwhelming at first, especially for non-technical users. Session replays are excellent, funnels are well-designed. 4.4/5 rating on G2 with recurring mentions of feature richness. Once you get past the learning curve, it's a joy to use.

Is it worth it?

The value for money is unbeatable. Over 90% of companies use PostHog for free thanks to the 1M events/month free tier. When you do pay, the usage-based pricing is transparent and degressive. Compared to paying for Amplitude + Hotjar + LaunchDarkly separately, you easily save 80% while having everything in one place.

What I like

  • You want a complete analytics stack without managing 8 different tools (analytics, replay, feature flags, surveys...)
  • You're technical or have access to a dev, and want a tool that integrates seamlessly into your code workflow
  • You're scaling and need transparent pricing that won't break the bank

What I like less

  • You're looking for a plug-and-play solution without touching code — PostHog requires technical installation
  • You don't have volume (less than 10K events/month) — you might as well use simpler free tools
  • You're allergic to the command line and don't have a dev on hand

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