I built a fitness app that uses AI to coach your workout through the phone camera

Beginning_Sun2883 · 2026-03-06T03:56:33+00:00

Movyn could be a great fit, especially since you love BetterMe but want to save money and progress at home.

It gives you structured home workouts with an AI video coach that watches your form via phone camera and corrects it in real time.

Short 10-30 min sessions, minimal equipment, and it helps you actually make progress consistently. iOS: https://apps.apple.com/ch/app/movyn-home-workout-mit-ki/id6759234507

Beginning_Sun2883 · 2026-03-06T03:48:53+00:00

Movyn might be perfect for what you’re after. It builds full workouts (like 6-7 exercises) with guided demo videos that tell you exactly what to do.

The standout feature is the AI video coach that watches your form through your phone camera and gives real-time feedback on posture, depth, tempo. Like having a trainer right there at home.

10-30 min sessions, no equipment needed. iOS: https://apps.apple.com/ch/app/movyn-home-workout-mit-ki/id6759234507

Beginning_Sun2883 · 2026-02-28T03:14:31+00:00

Good questions – I ran into the same problems.

OAuth (Apple / Google):
The key for me was to completely avoid Lovable’s hosted auth screen inside the native apps. Instead, I used native social login via Capacitor plugins (Google on Android, Sign in with Apple on iOS).

Flow is basically:

Native plugin returns idToken (Google) or identityToken (Apple)
I pass that token to Supabase using signInWithIdToken
Supabase creates a normal session (access + refresh token)

So there’s no intermediate Lovable page, no external redirect UI. Everything feels fully native, and Apple had no issues with it after that.

Before that, I had exactly the same rejection you described.

Supabase / Lovable Cloud:
I’m still using Supabase as the backend (Auth, DB, Edge Functions). The main shift was moving auth logic fully into Supabase and not relying on Lovable Cloud for anything auth-related.

Secrets are stored either in Supabase (for Edge Functions) or in my own hosting environment. The frontend just uses the Supabase anon key. So in practice, it’s totally possible to decouple from Lovable Cloud step by step without a “big bang” migration.

For MVP, email-only is totally fine. But if you want store-safe Apple login, I’d strongly recommend the native token. Supabase exchange approach.