I built free SaaS churn tools (and realised most benchmarks are useless)

Robin | Adversa | SauceCode — Tue, 17 Mar 2026 09:40:12 +0000

Over the weekend I went down a rabbit hole trying to answer a simple question:

What is a “good” churn rate for SaaS?

I expected a clear answer.

Instead, I found:

But none of that really helps.

Because it ignores things like:

A SaaS at $5k MRR behaves very differently to one at $1M ARR.

So I built a few simple tools

To make things more concrete, I built a set of free churn tools:

They’re intentionally simple - just enough to:

The real idea isn’t the calculators

The tools are just the starting point.

What I actually want to build is a live dataset of SaaS churn benchmarks.

Instead of static blog posts saying:
“good churn is X%”

We could eventually answer things like:

The problem with existing benchmarks

Most churn benchmarks today come from:

Which leads to advice that’s either:

What I’ve noticed already

Even in early conversations and posts:

Where this could go...

If enough people use the tools, this could turn into:

Quick question for other founders to see what others think about this:

If you want to try it, it’s free, no signup required:

Would love any feedback - still very early and figuring out if this is worth pushing further.

DEV Community: Robin | Adversa | SauceCode