Which is cheaper, Fathom or PostHog?

Pricing varies by tier and usage. Check both tools for current rates.

Does Fathom have a free tier?

No, Fathom does not have a free tier.

Fathom has drop-in switching cost. PostHog has moderate switching cost. Fathom is easier to switch away from.

Analytics

Fathom

Privacy-focused web analytics with no cookie banners required and forever data retention

Switching Cost: drop-in

PostHog

Open-source product analytics platform with session replay, feature flags, A/B testing, and usage-based pricing

Switching Cost: moderate

The free tier advantage goes to PostHog, which offers a no-cost entry point that Fathom lacks.

You'll notice different pricing structures: flat-rate for Fathom versus usage-based for PostHog.

PostHog stands out for teams needing a free tier — zero upfront costs for prototyping and testing is a genuine advantage.

PostHog stands out for teams needing a free tier — zero upfront costs for prototyping and testing is a genuine advantage.

Free Tier

PostHog

Has a free tier option

Pricing Model

Different

Tools charge using different pricing philosophies

Switching Costs

Fathom

Lower switching costs for easier migration