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 is our overall pick for product analytics workflows. 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 to try before committing
- • You need product analytics features specifically
- • All-in-one product OS (analytics, flags, replay)
- • Open source and self-hostable
Fathom Analytics
Simple privacy-first analytics
Best for you if:
- • You need web analytics features specifically
- • Privacy-first analytics without cookies
- • GDPR compliant with simple dashboard
| At a Glance |  PostHog |  Fathom Analytics |
|---|---|---|
Starts at | FreeFree tier available | $18/moTeam |
Best For | Product Analytics | Web Analytics |
Rating | 4.5/5 | 4.4/5 |
Choose PostHog or Fathom Analytics?
Choose PostHog if
Open-source product analytics with event tracking, feature flags, and session recording
- Open source
- All-in-one
- Self-hostable
- Your work is product analytics-shaped, not web analytics-shaped
Choose Fathom Analytics if
Simple privacy-first analytics
- Privacy compliant
- Fast loading
- Clean UI
- Your work is web analytics-shaped, not product analytics-shaped
| Feature | PostHog | Fathom Analytics |
|---|---|---|
| Pricing Model | Freemium | Paid |
| User Rating | ★4.5/5 1,036 reviews | ★4.4/5 20 reviews |
| Categories | Product AnalyticsWeb Analytics | Web AnalyticsAnalytics |
In-Depth Analysis
PostHog
Open-source product analytics with event tracking, feature flags, and session recording
Strengths
- +Open source
- +All-in-one
- +Self-hostable
Weaknesses
- -Complex setup
- -Can get expensive
Key features
Fathom Analytics
Simple privacy-first analytics
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 (1,036 reviews). Fathom Analytics: 4.4/5 (20 reviews).
Go with: PostHog
Value user reviews?
PostHog: 1,036 reviews (4.5/5). Fathom Analytics: 20 reviews (4.4/5).
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?
PostHog is rated higher: 4.5/5 vs 4.4/5.
Key Takeaways
PostHog
- Higher user rating: 4.5/5 vs 4.4/5
- Larger review base (1,036 reviews)
- Free tier available
- Our pick for this comparison
Fathom Analytics
- Better fit for web analytics
The Bottom Line
PostHog is our pick.
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.