Been using it for a while now. You hit record, walk through whatever you're doing, and it spits out a step by step guide with screenshots. That's it. No manual documenting, no fighting with formatting.
I needed to train someone on a process that takes fifteen minutes to explain. Recorded it once with Stepsy. Now I have a guide they can follow. Saved hours of back and forth.
The support thing isn't marketing fluff either. Vova actually responds. Asked about a feature, got a thoughtful answer the same day. Yesterday, he responded and FIXED the issue within minutes!! They're actively improving it based on feedback, not just letting it sit.

For the price on AppSumo, this pays for itself immediately if you're creating any kind of documentation or training material. You probably already know whether you need this. If you do, grab it.