Private by design

Track your progress on your iPhone.

MuscleGuard helps you record body changes, medication, protein intake, scans, progress photos, injections, and side effects in one place. Your data stays on your device by default, with no accounts and no ads.

Local-first

Profile details, logs, scans, notes, and progress photos stay in MuscleGuard's local database on your iPhone unless you explicitly choose to export or share them.

No account required

MuscleGuard does not require sign-in or run advertising networks inside the app. Subscription billing is handled by Apple through the App Store.

AI is optional

A small set of features can send a photo, OCR text, or aggregated summary for analysis only when you tap an AI action. If you never tap those features, that data never leaves your device.

Public links

These pages are published as stable references for App Store Connect and customer support.