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The AI estimates from your photo and gives you a range (for example, "520–680 cal") rather than one fake-precise number, because portion sizes can't be judged exactly from a photo. You can adjust any estimate with a tap before saving. Over weeks of consistent logging, the ranges average out and the trends are what matter.

Because no phone camera can. A 2D photo doesn't contain the depth information needed for a true circumference, so any app promising exact tape-measure numbers from a photo is guessing. MuscleGains shows week-over-week direction and ranges instead — which is what actually tells you whether your plan is working.

Every logged meal is scored 1–100 by the AI based on how well it fits your goal — a high-protein, moderate-calorie meal scores high on a cut, and the same meal scores differently on a bulk. Gym visits earn 50 points with photo proof. Points feed the weekly and all-time leaderboards and any private group challenges you've joined.

Only you. Other users can only ever see your display name, your point totals, and your rank on leaderboards. Photos and logs are private to your account — see the privacy policy for details.

Every account gets one 7-day free trial of Premium, started from the Premium screen in the app. No payment details are needed, and the trial simply ends after 7 days — you are never charged automatically.

Paid Premium subscriptions ($14.99/month or $119/year) are coming soon and will be handled through Apple, manageable in iPhone Settings → your name → Subscriptions.

Open the entry in your daily log, then tap the delete action on that entry. Deleted entries are removed from your totals and your discipline points are recalculated.

Send a request through the contact form, choose the topic "Delete my account", and enter the email on your MuscleGains account. We confirm by replying to that address, then permanently delete your profile, all photos, meal and workout logs, discipline points, and leaderboard history within 30 days. It cannot be undone.

An in-app delete-account option is on the way; until then, the form is the way to go.

Retake the photo from directly above the plate in decent light, with the whole plate in frame. If it keeps failing, check your internet connection — analysis needs to reach our servers. Still stuck? Email us with the time it happened.