PostHog vs Fathom Analytics: Which is Better in 2026?
Choosing between PostHog and Fathom Analytics comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: PostHog wins this matchup. Our overall Web Analytics pick is Google Analytics. Our free Web Analytics pick is Microsoft Clarity. Pick Fathom Analytics if you need web analytics.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
PostHog
Open-source product analytics with event tracking, feature flags, and session recording
Best for you if:
- • You want a free tier before you commit
- • You want open source
- • You want all-in-one
Fathom Analytics
Simple privacy-first analytics
Best for you if:
- • You want privacy compliant
- • You want fast loading
| At a Glance | PostHog | Fathom Analytics |
|---|---|---|
Starts at | FreeFree tier available | $18/moTeam |
Best For | Product Analytics | Web Analytics |
Rating | 4.5/5 | 4.7/5 |
Free plan | Yes | No |
Choose PostHog or Fathom Analytics?
Choose PostHog if
Open-source product analytics with event tracking, feature flags, and session recording
- You want a free tier before you commit
- You want open source
- You want all-in-one
- Your work is product analytics-shaped, not web analytics-shaped
Choose Fathom Analytics if
Simple privacy-first analytics
- You want privacy compliant
- You want fast loading
- Your work is web analytics-shaped, not product analytics-shaped
| Feature | PostHog | Fathom Analytics |
|---|---|---|
| Pricing Model | Freemium | Paid |
| User Rating | ★4.5/5 1,054 reviews | ★4.7/5 21 reviews |
| Categories | Product AnalyticsWeb Analytics | Web AnalyticsAnalytics |
In-Depth Analysis
PostHog
Open-source product analytics with event tracking, feature flags, and session recording
PostHog's pricing is quite generous, especially with its robust free tier offering 1M events and unlimited seats.
Watch out
Overage fees for events beyond free tier
Strengths
- +Open source
- +All-in-one
- +Self-hostable
Weaknesses
- -Complex setup
- -Can get expensive
Key features
Fathom Analytics
Simple privacy-first analytics
Fathom Analytics' pricing structure appears somewhat expensive, especially for individual users.
Strengths
- +Privacy compliant
- +Fast loading
- +Clean UI
Weaknesses
- -Limited features
- -No free tier
Key features
Pricing: PostHog vs Fathom Analytics
| Plan | PostHog | Fathom Analytics |
|---|---|---|
| Tier 1 | Free Free | $0 Free |
| Tier 2 | Custom Usage-Based | $20/user Premium |
| Tier 3 | $750 Scale | $18/user Team |
| Tier 4 | N/A | $28/user Business |
Pricing verified from each vendor's public pricing page. Compare in detail on PostHog pricing and Fathom Analytics pricing.
Who Should Use What?
On a budget?
PostHog has a free tier. Fathom Analytics is paid only.
Go with: PostHog
Want the highest-rated option?
PostHog: 4.5/5 (1,054 reviews). Fathom Analytics: 4.7/5 (21 reviews).
Go with: Fathom Analytics
Value user reviews?
PostHog: 1,054 reviews (4.5/5). Fathom Analytics: 21 reviews (4.7/5).
Go with: PostHog
3 Questions to Help You Decide
What's your budget?
PostHog is freemium. Fathom Analytics is paid. PostHog lets you start free.
What's your use case?
PostHog is a product analytics tool. Fathom Analytics is in web analytics. Pick the category that matches your needs.
How important are ratings?
Fathom Analytics is rated higher: 4.7/5 vs 4.5/5.
Key Takeaways
PostHog
- Larger review base (1,054 reviews)
- Free tier available
- Our pick for this comparison
Fathom Analytics
- Higher user rating: 4.7/5 vs 4.5/5
- Better fit for web analytics
The Bottom Line
PostHog wins this matchup. Our overall Web Analytics pick is Google Analytics. Our free Web Analytics pick is Microsoft Clarity.
Frequently Asked Questions
Is PostHog or Fathom Analytics better?
PostHog is rated in our evaluation. PostHog is freemium and Fathom Analytics is paid.
What are PostHog and Fathom Analytics used for?
PostHog: Open-source product analytics with event tracking, feature flags, and session recording. Fathom Analytics: Simple privacy-first analytics.
What does PostHog cost vs Fathom Analytics?
PostHog is freemium (free tier + paid plans). Fathom Analytics is a paid tool. Visit their websites for detailed pricing.