so... I built my own web analytics SaaS
Marc Lou
Jan 28, 2026 08:01
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483 days ago, I built my own web analytics out of frustration.
I was using Plausible and loved its simplicity, but I felt stuck. Pageviews are nice, but they don’t tell you what makes money.
So I built my dream tool: connect Stripe to traffic, and see where revenue actually comes from, so I can double down.
Almost nobody cared.
It took 120 days to reach $1k MRR.
But it didn't mind. I was having fun.
I shipped 117,869 lines of code to build features I needed myself.
My only KPI was (and still is) features shipped.
Slowly, word of mouth kicked in, and the SaaS started growing on its own.
16 months later:
- $17K MRR
- 983 paying customers
- 1.1B pageviews tracked
I wanted to quit many times. I’m competing with giants and VC-backed startups, in an overcrowded market, for a vitamin product.
What changed everything was niching down: building ultra-specific features for my own problems and hoping others had the same ones.
I don’t really do marketing. Most users come from word of mouth.
But today is special. I never truly launched DataFast, so I made this video to finally do it. Hope you like it!
→ https://datafa.st/
Science & Technology
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