I found that there are loads of apps like this out there, with varying degrees of polish / paywalls. Don't get me wrong, this one doesn't look bad! But what I really want is a demonstrated long-term commitment to the app.

If I can give one piece of feedback, the LLM copy on this website doesn't inspire confidence. Like it mentions "Identical layout: kg always on the left, reps on the right." Is that really a feature? Or "Confetti, only when earned. Never as filler." -- idunno, that doesn't seem like it deserves a spot on the landing page to me.

This is for rotating through a bunch of different stretches/exercises routine 1 minute per stretch

Every app I've tried is too complicated.