Fathom Analytics vs Vemetric in 2026: mature privacy-first analytics vs an open-source challenger with product analytics built in
Both are cookieless and GDPR-first by design. One is a polished, seven-year-old product with forever data retention. The other is $5 a month, open-source, and tracks your product alongside your website.
Fathom Analytics
Vemetric- Vemetric combines web analytics and product analytics (funnels, user journeys) in one platform. Fathom is web analytics only, with no in-product event or funnel tracking.
- Fathom has no free tier and starts at $15/month, but every plan includes 50+ sites and forever data retention. Vemetric has a free tier capped at 2,500 events and 1 month of retention, then $5/month for unlimited projects and seats.
- Vemetric is open-source and self-hostable for teams that need full data sovereignty. Fathom has no self-hosting option.
- Fathom is bootstrapped with no VC investors and has been operating since 2018, giving it a longer track record and more documented integrations. Vemetric is a newer, single-founder product still building out its ecosystem.
- Vemetric auto-detects and attributes traffic from AI tools like ChatGPT with no extra configuration. Fathom does not have a named AI-referral detection feature.
- Fathom includes 50+ sites on every plan, making per-site cost predictable for agencies managing many client properties. Vemetric prices by event volume with unlimited projects only on the paid tier.
Fathom Analytics and Vemetric both promise the same basic thing: traffic data without cookies, without consent banners, and without sending personal data to a third party. Past that starting point they diverge fast. Fathom is a mature, independently owned product that has been refining a single-purpose web analytics dashboard since 2018, and its forever data retention plus 50-site allowance make it a genuine option for agencies. Vemetric is newer, open-source, and self-hostable, and it does something Fathom does not attempt: it follows a user from an anonymous website visit into logged-in product behavior, with funnels and journey tracking in the same tool. Fathom starts at $15 a month with no free tier. Vemetric has a real free tier and a $5 Professional plan, though its free tier caps out at 2,500 events and one month of history. The choice comes down to whether you need a proven, page-view-priced tool built for agencies, or a cheaper, self-hostable tool that also covers your product.
The tools at a glance
Fathom Analytics
Simple, GDPR-compliant web analytics with cookieless tracking, forever data retention, and no consent banners.
Fathom has been doing one thing since 2018: cookieless, privacy-first web analytics that never requires a consent banner. The one-line script setup and clean dashboard cover real-time and historical traffic, referrers, countries, devices, and conversion events, and every plan retains that data forever rather than aging it out.
The 50-site minimum on every plan is a deliberate choice aimed at agencies. A single Fathom account can cover a full client portfolio without per-site fees stacking up, and API access is included from the first dollar rather than gated to an enterprise tier.
What Fathom does not do is product analytics. There are no funnels, no user journey timelines, and no way to track behavior once someone signs into your app. It is a website traffic tool, done well, and nothing more.
| Feature | All plans From $15/mo |
|---|---|
| Pricing model | Based on monthly page views |
| Sites included | 50+ |
| Data retention | Forever |
| Product analytics / funnels | No |
| API access | Yes |
| Self-hosting | No |
Vemetric
Open-source, privacy-first analytics combining web traffic and product analytics in one cookieless platform.
Vemetric tracks marketing site traffic and in-product user behavior from the same script. Instead of running Fathom for web traffic and a separate tool for funnels, Vemetric follows a visitor from an anonymous landing page view through to an identified account, with a single continuous timeline of events, sessions, and devices.
The free tier is real: no credit card, no time limit, just a 2,500 event and one-month retention cap. The Professional plan at $5 a month removes both limits and adds unlimited projects and seats, a price the founders have said publicly will rise as the product matures.
The open-source codebase on GitHub means teams that cannot send data to a third party can self-host instead. The tradeoff is a thinner integration ecosystem and less documentation than Fathom, since Vemetric is a much newer, single-founder product.
| Feature | Free $0/mo | Professional From $5/mo |
|---|---|---|
| Events per month | 2,500 | 10,000+ |
| Projects | 2 | Unlimited |
| Data retention | 1 month | 5 years |
| Product analytics / funnels | Yes | Yes |
| API access | Yes | Yes |
| Self-hosting | Yes | Yes |
Head-to-head feature comparison
| Feature | Fathom Analytics | Vemetric |
|---|---|---|
| Starting price | $15/mo | $0/mo, then $5/mo |
| Free tier | No (7-day trial only) | Yes |
| Data retention | Forever | 1 month (free), 5 years (paid) |
| Product analytics (funnels, journeys) | No | Yes |
| Open-source / self-hostable | No | Yes |
| Cookieless / no consent banner | Yes | Yes |
| AI referral traffic detection | No | Yes |
| Sites/projects included on entry plan | 50+ sites | 2 projects (free), unlimited (paid) |
| API access | Yes | Yes |
| Founded / maturity | Since 2018 | Newer, single founder |
Which should you choose?
Fathom AnalyticsVemetricFathom AnalyticsVemetricFathom AnalyticsVemetricThese two are not really fighting for the exact same buyer. Fathom is the safer pick if you want a mature product with a long track record, forever retention, and enough sites included to run an agency practice on one account. Vemetric is the better pick if your budget is tight and you specifically want product analytics (funnels, user identification, journey timelines) without paying for two separate tools. Vemetric is also the only one of the two with a self-hosting option, which matters if data sovereignty is a hard requirement rather than a nice-to-have.
Bottom line
Go with Fathom if you are an agency or publisher that wants a dependable, page-view-priced tool with forever retention and do not need to look inside your product. Go with Vemetric if you are an early-stage team that wants web analytics and product analytics in one place for $5 a month, and are comfortable betting on a newer, single-founder product that is still growing its ecosystem.
Frequently asked questions
Is Vemetric a good alternative to Fathom Analytics?
Vemetric is a legitimate alternative for teams that want product analytics alongside web traffic and are comfortable with a newer, smaller product. It costs less than Fathom at every tier and adds funnels and user journey tracking that Fathom does not have, but Fathom has seven years of maturity and a much larger set of documented integrations.
Which tool is cheaper, Fathom Analytics or Vemetric?
Vemetric is cheaper at every stage: it has a genuine free tier and its paid Professional plan starts at $5 per month. Fathom has no free tier and starts at $15 per month, though that price includes 50 or more sites and forever data retention, which changes the per-site math for agencies.
Does Fathom Analytics track in-product user behavior like Vemetric does?
No. Fathom is a website traffic analytics tool with no funnels, user journey timelines, or in-app event tracking. Vemetric was specifically built to cover both marketing site traffic and product analytics in a single script, which is its main functional advantage over Fathom.
Can I self-host Vemetric instead of using Fathom?
Yes, Vemetric is open-source and self-hostable, which Fathom does not offer at all. Teams that need full control over where analytics data lives, for regulatory or internal policy reasons, have a real self-hosting path with Vemetric that simply does not exist with Fathom.
Why does Fathom require a minimum of 50 sites per account?
Fathom bundles at least 50 sites into every plan specifically to make multi-client management practical for agencies, rather than charging per site. Vemetric prices by event volume and project count instead, which suits a single product or a small handful of properties better than a large agency portfolio.