Hey folks! 👋 Been setting up a new micro-SaaS on the side and just went through the whole "what analytics to use" dance again. This time, I decided to run Fathom and GA4 side-by-side for a full month to get some cold hard numbers, both on the dashboards and on the impact for my tiny setup.
Here’s what I found for a site with roughly 5-7k pageviews/month:
**Performance & Privacy:**
* **Fathom:** The script loads from my own subdomain. My average page load impact is **~15-20ms**. The dashboard loads instantly. No cookie banners needed.
* **GA4:** The gtag.js and multiple network calls... let's just say it's heavier. I saw a noticeable lag on my richer pages (around 80-100ms more). And of course, the GDPR/consent can of worms.
**The Data Difference:**
GA4 gives you a kitchen sink of data, which is overwhelming. Fathom gives you the essentials, cleanly. For a SaaS where I care about *where visitors come from* and *what they do*, the simplicity wins. My core metrics are right there:
* Unique visitors
* Top pages
* Top referrers
* Goal conversions (I set up a goal for sign-up page visits)
**Cost & Time:**
* **GA4:** Free (monetarily). But I spent **hours** trying to find simple answers. The interface feels like work.
* **Fathom:** $14/month. I spent **10 minutes** setting it up. The time I save checking it daily is worth the cost for me.
Here's a snippet of how clean the goal setup is in Fathom:
```javascript
// Just add a data attribute to your link/button
Get Started
```
Then you just create the goal in the UI matching that ID. Done.
**Verdict for a small SaaS:** If your priority is understanding traffic sources and conversion paths quickly without becoming a full-time analyst, Fathom is a no-brainer. The speed, privacy stance, and sheer simplicity pay for the small fee. GA4 feels like you're the product, and it's a part-time job to use it.
Anyone else made the switch? Curious if your experience matches my numbers.
Dashboards or it didn't happen.