Plausible vs Fathom vs PostHog: Best SaaS Analytics
Reviewed by Priya Nair
Updated June 5, 2026
Quick Comparison
| PostHog | Plausible Analytics | Fathom Analytics | |
|---|---|---|---|
| Best For | SaaS product teams needing deep user behavior data. | Marketing sites needing simple, fast, open-source stats. | Agency owners managing multiple client sites from one spot. |
| Pricing | Free tier available / $0.0001 per event after 1M | 30-day trial / $9/mo starting | 7-day trial / $15/mo starting |
| Winner | Our Pick |
Tool Breakdown
Overall Winner
PostHog
Provides full product suite including session replays and feature flags free up to 1M events monthly.
What it does well
- 1M monthly events free
- Built-in session replays
- Integrated feature flags
Watch out for
- Complex interface
- Steep learning curve
Best For
SaaS product teams needing deep user behavior data.
Pricing
Free tier available / $0.0001 per event after 1M
Plausible Analytics
Lightweight script tracks stats without cookies or complex setup.
What it does well
- No cookie banner needed
- Lean script size
- Open source code
Watch out for
- No session recording
- Basic event tracking
Best For
Marketing sites needing simple, fast, open-source stats.
Pricing
30-day trial / $9/mo starting
Fathom Analytics
Single-page dashboard displays traffic data fast without tracking users.
What it does well
- Extremely fast dashboard
- All sites one price
- Reliable uptime
Watch out for
- No self-host option
- Higher entry price
Best For
Agency owners managing multiple client sites from one spot.
Pricing
7-day trial / $15/mo starting
Frequently Asked Questions
Can I use these without cookie banners? +
Yes. All three track data without PII or cookies so banners stay off.
Is PostHog overkill for simple blog? +
Yes. Use Plausible or Fathom for blogs. PostHog built for apps.
Which tool cheapest for high volume SaaS? +
PostHog. 1M events free beats paid tiers of competitors for most startups.