Fathom Analytics vs Google Analytics 4
They differ on 8 of the 14 things buyers in this category actually ask about. Here is where, and what each one asks you to give up.
Privacy-first web analytics with unlimited retention and a fixed, predictable bill.
Strongest argument
Unlimited sites on one subscription, which suits agencies well
Biggest objection
No funnels beyond basic goal tracking
The simplest privacy-safe option, with a feature ceiling you will hit if you need behavioural analysis.
The free default, now event-based, with BigQuery export and a steep relearning curve.
Strongest argument
Free at volumes most sites will never exceed
Biggest objection
Requires a cookie banner, and consent refusals silently gut your data
Free and powerful, in exchange for a cookie banner, a hard interface and Google holding your data.
The differences that matter
Where they actually diverge
Only the rows where the two disagree. Everything they both do is listed below.
Cost
What each costs at 50 people
List price only. It ignores add-ons, seat minimums and the cost of the move itself — all of which routinely dwarf the difference below.
Prices are unverified estimates — useful for comparing orders of magnitude, not for budgeting. Confirm the current figure with the vendor before you commit to anything.
Common ground
What both of them do
These will not help you choose — which is exactly why they are worth knowing about before a vendor pitches one as a differentiator.
- Session replayNo
- Real-time reportingYes
- Raw data exportYes
- Self-hostableNo
- Open sourceNo
- Public APIYes
In full
Every pro and con, both sides
Fathom Analytics
- Unlimited sites on one subscription, which suits agencies well
- Cookieless and GDPR-compliant without a consent banner
- Data is retained forever rather than expiring after a year
- No funnels beyond basic goal tracking
- Not a product-analytics tool — there is no user-level analysis
- Fewer integrations than the larger platforms
Google Analytics 4
- Free at volumes most sites will never exceed
- Raw event export to BigQuery is included, which no other free tool offers
- Integrates with Google Ads and Search Console without configuration
- Requires a cookie banner, and consent refusals silently gut your data
- GA4 discarded most of Universal Analytics’ mental model and reporting
- Data thresholding hides rows without telling you which ones
Questions
Fathom Analytics vs Google Analytics 4, answered
Fathom Analytics or Google Analytics 4 — which is better?
Neither, in the abstract. Fathom Analytics suits you if unlimited sites on one subscription, which suits agencies well matters most; Google Analytics 4 if free at volumes most sites will never exceed does. The honest trade-offs are: Fathom Analytics — The simplest privacy-safe option, with a feature ceiling you will hit if you need behavioural analysis. Google Analytics 4 — Free and powerful, in exchange for a cookie banner, a hard interface and Google holding your data.
Is Fathom Analytics cheaper than Google Analytics 4?
Google Analytics 4 is cheaper at 50 people — $15/mo against Free, roughly $0 against $180 a year. That gap of about $180 is rarely the whole story though — add-ons, seat minimums and the cost of migrating routinely outweigh it.
Can we migrate from Fathom Analytics to Google Analytics 4?
Usually yes, and the difficulty depends on history, integrations and headcount far more than on the two products. Data export quality is the thing to check first: ask both vendors what you can take with you before you commit to either. Our questionnaire produces a scoped estimate for the move.
What else should we consider besides Fathom Analytics and Google Analytics 4?
In product & web analytics the other credible options are Matomo, Plausible, PostHog. Narrowing to two before you have written down your requirements is the most common way to end up with the wrong one.
Do not stop at two