PostHog and Google Analytics 4 (GA4) are both popular tools for understanding how users interact with your website or app – but they're built with very different goals.

GA4 is designed to track traffic, campaigns, and user behavior across websites and apps, with tight integration into Google's advertising ecosystem. It's one of the most widely deployed analytics tools in the world, and the default choice for teams who want marketing and attribution data in a familiar interface.

PostHog is an all-in-one developer platform that combines all the tools developers need in one place, with a single login and a single contract.

If you're looking for a GA4 alternative – whether for privacy reasons, because you need more than web analytics, or because you've outgrown GA4's free tier limits – this comparison will help you decide if PostHog is the right fit.

How is PostHog different?

1. We're an all-in-one platform

PostHog combines product analytics and web analytics with session replay, feature flags, error tracking, experiments, surveys, a baked-in data warehouse, and more into one tightly integrated platform. Everything you need from a single app with a single contract. A genuine single source of truth for your product and customer data.

GA4 is a powerful web analytics tool, but it doesn't include session replay, feature flags, A/B testing, error tracking, or surveys. For those features, you'd need separate tools like FullStory, LaunchDarkly, and Optimizely, and a way to stitch the data together.

2. It's built for developers

This means you get support from the engineers who actually build the product, extensively documented APIs, an MCP server for querying your data directly from AI coding tool, and a SQL query builder so you can analyze data how you want.

We're open source, so you can inspect our source code. And we ship fast – check out the weekly changelog to see what's new.

GA4 is primarily designed for marketers and growth teams. It integrates tightly with Google Ads and the broader Google Marketing Platform, but offers limited developer-facing tooling.

3. Transparent and cheap pricing (forever)

We default to charging as little as possible while still making a profit – we also have a generous free tier on all our products. We can do this because we're efficient. We don't splurge on D-list comedians to host an annual convention you'll never attend. Want to know how much we'll charge? See our pricing calculator.

GA4's core product is free, but once you hit the limits of the free tier you'll need to evaluate GA360, which starts at approximately $50,000/year according to third party sources (Google doesn't publish pricing).

Comparing PostHog and Google Analytics

Analytics

GA4 is primarily built for web analytics, so this is where the comparison matters most. PostHog's web analytics dashboard covers all the core metrics – traffic sources, pageviews, sessions, UTM tracking, and more – while also adding capabilities GA4 lacks, like cookieless tracking and web vitals monitoring.

PostHog goes significantly deeper on product analytics – including features like group analytics for analyzing behavior at the account or company level (ideal for B2B SaaS), SQL queries, correlation analysis, and more.

You can also go deeper on user behavior by utilizing heatmaps, scrollmaps, formulas, and the custom SQL insights.

Does PostHog have reports, dimensions, and other GA4 features?

Yes, PostHog has much of the same functionality as Google Analytics, but we use different terminology. Here’s a quick comparison of the two:

See our guide to PostHog for Google Analytics users for more help on making the switch.

Platform

When you choose PostHog, you get more than analytics.

Integrations

It's hard to import data into Google Analytics because:

1. The data type and format you're allowed to import is restrictive.
2. You either need to constantly upload CSV files manually, or set up an SFTP server to automatically do this for you.

In contrast, PostHog is built to be your single source of truth, so it's simple to import data from other sources using our built-in data warehouse, or send PostHog data to other tools using our realtime destinations.

Below is a comparison of some of the most popular apps – see our data pipeline and warehouse docs for a complete list of integrations.

Security and compliance

PostHog makes GDPR compliance easy by letting you choose where your data is hosted: EU or US.

Google also offers various privacy controls, but you can't choose where your data is stored – a meaningful concern for teams in regulated industries or those serving EU users.

When to choose PostHog vs Google Analytics 4

• Want an all-in-one developer platform that goes beyond web analytics with product analytics, session replay, feature flags, A/B testing, error tracking, and more – all in one place? Go with PostHog.
• Need deep integration with Google Ads, Search Console, and the broader Google Marketing Platform for marketing attribution and campaign reporting? GA4 is built for that.

Recommendations by team type

For engineering-led product teams

• PostHog – SQL access, MCP server, open-source codebase, error tracking, and AI Observability. Everything a developer needs to understand users, ship features, and debug problems without leaving the platform.

For marketing and growth teams

• GA4 – Best-in-class integration with Google Ads, Search Console, and Google's attribution ecosystem. If your team lives in Google's marketing stack, GA4 is the natural fit.

For product managers and UX teams

• PostHog – Funnels, retention, session replay, and surveys in one place means PMs can answer behavioral questions and gather user feedback without stitching together multiple tools.

For B2B SaaS companies

• PostHog – Group analytics enables account-level analysis, so you can understand behavior at the company level, not just the individual user level.

For privacy-conscious and regulated organizations

• PostHog – EU hosting with data stored exclusively in the EU, HIPAA-readiness, cookieless tracking, and raw data access via the built-in data warehouse. GA4 doesn't offer HIPAA compliance or EU-only data residency.

For content and media sites

• GA4 – If your primary need is understanding content performance, audience demographics, and ad revenue attribution across a high-traffic publishing site, GA4's native integrations with Google AdSense, Ad Manager, and Search Console are hard to beat.

For early-stage startups

• PostHog – A single platform that covers analytics, replays, feature flags, and more from day one. The generous free tier includes 1 million events, 5,000 session replays, and 1 million feature flag requests per month. Startups can also qualify for $50k in free credits.

For enterprise teams

• Tied – GA360 offers unsampled reporting, 50-month data retention, and deep Google Marketing Platform integration for large marketing organizations. PostHog offers SSO enforcement, a BAA for HIPAA compliance, priority support, and a complete product development stack with transparent pricing.