Fathom is a paid, closed-source hosted service from $15 a month for 100k pageviews. misomoon is open source and runs in your Cloudflare account, with funnels and Web Vitals that Fathom’s docs don’t list.
7-day free trial · No card needed · Or self-host free
Each fact about Fathom links to the page it came from, with the day we read it.
| Feature | misomoon | Fathom | Edge |
|---|---|---|---|
| Where your data lives | Your Cloudflare account, or misomoon Cloud in the EU, the US or Asia-Pacific | Fathom (EU collection, then US)1 | Even |
| Open source | Yes (MIT) | No. Fathom Lite, an older version, is MIT and gets no new features2 | misomoon |
| Price | Cloud from $5 a month for 100k events on 1 site, or $14 for 1M on unlimited sites. 7 days free. Free to self-host | From $15 a month for 100k pageviews3 | Even |
| Cookies | None | None (their claim)4 | Even |
| Funnels | Yes | Not found3 | misomoon |
| Core Web Vitals | Yes | Not found3 | misomoon |
| Official MCP server | Built in | Not found5 | misomoon |
| Tracker, gzipped | 1.0 KB core, 1.9 KB Light, 4.8 KB with every feature | 2.1 KB6 | Even |
| Two-factor sign-in | No | Yes5 | Fathom |
Run misomoon next to Fathom first. Your old numbers keep counting until the new ones line up.
Add the misomoon script next to Fathom’s and compare for a billing cycle.
Import your Fathom history under Settings > Integrations, with the site ID and an API token.
Recreate your events as goals in misomoon.
Cancel the plan once the numbers line up.
Yes, at the entry price. misomoon Starter is $5 a month for 100k events on 1 site, and Fathom starts at $15 for 100k pageviews. misomoon’s events count custom events as well as pageviews, so a site whose pageviews and custom events pass 100k a month, or a second site, needs Growth: $14 for 1 million events on unlimited sites. Self-hosted misomoon costs what Cloudflare charges for the Workers, D1 and Queues it uses: nothing on the Workers Free plan, which handles about 3,000 events a day, and from $5 a month for the whole account on Workers Paid.
On misomoon Cloud you pick the EU, the US or Asia-Pacific for each site. Self-hosted, the data stays in D1 databases in your Cloudflare account.
No. It sets no cookies and stores nothing on the visitor’s device unless they opt out of being counted.
misomoon’s own facts are in its docs, and its prices on the pricing page. Its plans count events: pageviews and custom events together. Prices and features change: follow the links to confirm.
One script tag, no cookies, and your own numbers to compare. 7 days free with no card, or self-host it in your Cloudflare account.