Fathom Analytics vs PostHog: Analytics Comparison (2026)

Fathom Analytics focuses on privacy-compliant website analytics with a fixed price for up to 50 sites, while PostHog offers a comprehensive suite of product analytics tools with usage-based pricing and generous free tiers for each feature.

AI Citation Scorecard

How often each is cited by major AI engines when buyers ask analytics questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.

Too early to call — probes still building data.
ChatGPT
Fathom Analytics
Tracking…
No data yet
PostHog
70 / 185 probes
38%
Good
Perplexity
Fathom Analytics
Tracking…
No data yet
PostHog
111 / 187 probes
59%
Excellent
Gemini
Fathom Analytics
Tracking…
No data yet
PostHog
106 / 188 probes
56%
Excellent
Claude
Fathom Analytics
Tracking…
No data yet
PostHog
74 / 185 probes
40%
Good
Copilot
Fathom Analytics
Tracking…
No data yet
PostHog
75 / 255 probes
29%
Average
Scale:NoneLowFairStrongExcellent

Probes run hourly; each (engine × query) combo retests every ~3 days.

Pricing

Fathom Analytics
Starting price
$15/month
Free tier
No
usefathom.com ↗
PostHog
Starting price
—
Free tier
Yes
posthog.com ↗

Key Features

Fathom Analytics
  • ✓50 sites included
  • ✓100% data ownership
  • ✓No cookie banners required
  • ✓Unlimited email reports
  • ✓Full analytics history while subscribed
  • ✓Unlimited CSV data exports
  • ✓Privacy law compliance
  • ✓Built for high traffic
PostHog
  • ✓Product Analytics: 1M events/mo free
  • ✓Session Replay: 5K recordings/mo free
  • ✓Feature Flags: 1M requests/mo free
  • ✓Managed Warehouse: 1M rows/mo free
  • ✓Usage-based pricing
  • ✓No sales calls required
  • ✓Generous free tiers
  • ✓Single source of truth for customers

When to choose Fathom Analytics

Fathom Analytics is ideal for users who prioritize privacy, 100% data ownership, and do not want to use cookie banners, offering a fixed price for up to 50 sites and unlimited email reports. It is built for high traffic and ensures full analytics history while subscribed, with unlimited CSV data exports.

When to choose PostHog

PostHog is suited for data and product teams looking for a single source of truth for product analytics, session replay, feature flags, and a managed warehouse, offering generous free tiers for each product module and usage-based pricing. It integrates with Stripe, error tracking tools, and support platforms.

Frequently Asked Questions

What is the starting price for Fathom Analytics?
Fathom Analytics starts at $15/month.
Does Fathom Analytics offer a free tier?
No, Fathom Analytics does not offer a free tier.
What are the key features of Fathom Analytics?
Key features of Fathom Analytics include 50 sites included, 100% data ownership, no cookie banners required, unlimited email reports, full analytics history while subscribed, unlimited CSV data exports, privacy law compliance, and being built for high traffic.
Does PostHog have a free tier?
Yes, PostHog offers generous free tiers including 1M product analytics events/month, 5K session recordings/month, 1M feature flag requests/month, and 1M managed warehouse rows/month.
What are the key features of PostHog?
Key features of PostHog include product analytics, session replay, feature flags, a managed warehouse, usage-based pricing, no sales calls required, generous free tiers, and serving as a single source of truth for customers.

AI visibility profiles

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Fathom Analytics

usefathom.com

PostHog

posthog.com

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