Both are strong choices. The short answer: pick PostHog if you are engineering-led teams that want it all. Pick Fathom if you are one-page dashboards without consent popups.
| PostHog | Fathom | |
|---|---|---|
| In one line | Open-source product analytics, flags, replays and more. | Simple, GDPR-friendly analytics with fast dashboards. |
| Pricing | Generous free tier; usage-based | From $15/mo |
| Free tier | Yes | No |
| Best for | Engineering-led teams that want it all | One-page dashboards without consent popups |
| Category | Analytics & Heatmaps | Analytics & Heatmaps |
| Website | posthog.com | usefathom.com |
PostHog details Fathom details