Solo dev from Belarus — built an app that shows which skills you're forgetting

Hey Product Hunt! 👋 I'm Pavel — solo iOS developer from Belarus.

Think about this for a second.

Students spend months preparing for exams — then forget 80% of the material two weeks later. Developers learn React, TypeScript, Docker, AWS — but only use two of them on their current project. Language learners grind Duolingo every day — then can't hold a basic conversation after a month off.

We're all learning constantly. But nobody tracks what's quietly disappearing.

There's actual science behind this: the Ebbinghaus forgetting curve shows ~50% of what you learn fades within 24 hours without reinforcement. The knowledge doesn't vanish overnight — it decays slowly, invisibly, until one day you open that project and think "wait, how did I do this again?"

Most apps help you learn. Almost none help you not forget.

That gap is what I spent 6 months building for — alone. No team, no funding, no safety net. My first ever shipped app.

Skill Decay Tracker gives every skill a live health score (0–100%) that decays over time based on the forgetting curve. When something starts fading, the app generates a 2-minute AI micro-challenge to bring it back. Coding, languages, music, exam prep — anything.

Honestly? Shipping something for the first time is terrifying. I have no idea if this resonates with anyone outside my own head.

So I'd love one thing from you: does this click? Is "I'm slowly forgetting this" a pain you actually feel?

👇 What skill are you quietly losing right now?