Fathom Analytics vs PostHog
Both are in Web analytics. Here is how their plans, prices and features compare, taken from each vendor's own site.
The main differences
- Fees: Fathom Analytics states none; PostHog Same free tier each month, then pay for usage.
| Fathom Analytics | PostHog | |
|---|---|---|
| Starting price | from $15/mo | Free plan |
| Free plan | Not stated by the vendor | Yes |
| Free trial | Yes | Not stated by the vendor |
| Plans | Up to 100,000 pageviews ($15/mo); Up to 200,000 pageviews ($25/mo); Up to 500,000 pageviews ($45/mo) | Free ($0); Pay-as-you-go () |
| Fees | Not stated | Same free tier each month, then pay for usage |
| Best for | Not stated | Not stated |
| Key features | 50 sites included on every plan; No cookie banners required; Event and revenue tracking; UTM campaign tracking | Product and web analytics, 1M events a month free; Session replay, 5,000 recordings a month free; Feature flags (1M requests free) and experiments; Surveys and error tracking |
| Checked on | 2026-10-02 | 2026-10-03 |
Prices change; confirm on the vendor's site before you buy. Full details and sources are on each tool's page.
Fathom Analytics
- Every plan includes the same features
- 50 sites included
- Yearly billing gives 2 months free
- Email support from real people
Trade-offs
- 7-day trial needs a credit card
- No free plan
- Extra sites cost $10 a month per pack of 50
PostHog
- Free tier with no credit card that renews monthly, not a trial
- Usage stops at the free limits, so no surprise bills
- Unlimited team members
Trade-offs
- The free plan has 1 project and 1-year data retention
- Pay-as-you-go has no flat price, so cost depends on usage across products
- Platform packages (SSO, audit logs, custom roles) are sold separately