PostHog vs Fathom Analytics
Both sit in analytics & data. Here is how they differ on the things you can actually check.
On price: PostHog starts $15 a month cheaper than Fathom Analytics ($0 against $15) on its Pay-as-you-go tier. Both figures were read from the vendors' own pricing pages on the dates shown below.
PostHog
posthog.com
An all-in-one product platform bundling analytics, session replay, feature flags, experiments, surveys and error tracking, with AI-assisted diagnosis on top. Self-hosting still exists but is no longer the headline.
Fathom Analytics
usefathom.com
Cookie-free web analytics with a fast dashboard, unlimited sites on most plans and automatic GDPR-friendly handling.
| PostHog | Fathom Analytics | |
|---|---|---|
| Entry price | $0/mo | $15/mo |
| Entry plan | Pay-as-you-go | — |
| Paid annually | — | — |
| Price checked | 25 Aug 2026 | 19 Oct 2026 |
| Pricing model | Free plan | Free trial |
| Free plan | Yes | No |
| Category | Analytics & Data | Analytics & Data |
| Around since | 2020 | 2018 |
Every price here was read from the vendor's own pricing page, most recently on 19 Oct 2026. Entry tier only — vendors change pricing without notice.
PostHog vs Fathom Analytics, answered
- Is PostHog cheaper than Fathom Analytics?
- Yes. PostHog starts at $0 a month against Fathom Analytics's $15.
- Do PostHog or Fathom Analytics have a free plan?
- PostHog publishes an ongoing free plan; Fathom Analytics does not.
- What is the difference between PostHog and Fathom Analytics?
- PostHog: An all-in-one product platform bundling analytics, session replay, feature flags, experiments, surveys and error tracking, with AI-assisted diagnosis on top. Self-hosting still exists but is no longer the headline. Fathom Analytics: Cookie-free web analytics with a fast dashboard, unlimited sites on most plans and automatic GDPR-friendly handling.
