I've lifted for months and my arms stalled for most of them. When I finally measured properly, the problem was my brachialis (the muscle under the biceps), which I'd never trained on purpose. So I built BicepsMaxx: - One flexed photo gives an arm score and six zone scores: peak, thickness, brachialis, forearm, symmetry, definition - Every session starts with your weakest zone, for home or gym - A workout player with a haptic tempo coach (the phone buzzes on each phase of the rep) - Food photo to macros, with a protein target from your weight - Weekly rescans and tape measurements on one chart - Works offline for 30 days once you're signed in Stack: Expo for iOS, Android and web from one codebase, Convex for the backend, RevenueCat + Stripe for billing. It launches this week. Until next week, anyone who joins the beta (TestFlight or Google Play) and signs in gets a year of Pro free, first 100 people: https://bicepsmaxx.altuzar.dev/beta?ref=reddit What I'd love feedback on: the onboarding (is it too long?) and whether the scan matches what you see in the mirror.   submitted by   /u/altuzar [link]   [comments]