Altrillio: Find out if you're actually rolling your R

Hi Product Hunt! 👋 I’m Miro, a solo iOS developer from Slovakia. Confession: I still can’t reliably roll my R. The worst part was never knowing whether I was actually doing it right, and I definitely wasn’t going to keep failing in front of other people. So I built Altrillio. You tap, try the R, and it tells you instantly whether it was a real trill: yes or not yet. Everything runs on your iPhone, so nobody hears your attempts, not even me. It also has guided exercises, a personal best tracker and a mirror mode to check your tongue position. One-time purchase, no subscription. I’d love your feedback, especially from anyone who learned the rolled R as an adult. What finally made it click for you? 🙂