What your medication actually costs you: muscle.
Weight loss on GLP-1 medication or any other peptide isn't just fat loss. A meaningful share of what comes off is muscle, not fat. Composa measures the difference every week - free, from a tape measure, with no scan to book and no smart scale to buy.
What you get
Fat-vs-muscle composition tracking, not just a number on a scale. Log any medication or peptide - your injection log isn't locked to one drug. Barcode-scan any food and hit your protein target without a spreadsheet. A rebound-risk reading scored from your measured composition and the protein and training you actually logged, so the off-ramp is something you can watch rather than walk into. A Community that gets it - ask the question you're afraid to Google, get a real answer from people going through the same thing. Progress photos, not just progress numbers.
What Composa is not
Composa is not a medical device and gives no medical advice, no dosing guidance, and no diagnosis - anything about your medication is a conversation for your prescriber, not an app. There's no AI pretending to be a human coach here, and no fitness content dressed up with borrowed medical authority. Coaching and training are delivered by an actual qualified person, doing their own job, not wearing someone else's coat to look more credible.
Free to start
Core measurement - fat-vs-muscle tracking, food logging, and injection reminders - is free, forever. No paywall from day one like some GLP-1 apps. Post and reply in Community with Plus. Weekly 1:1 check-ins with a real human coach with Coaching. The off-ramp screen and training support for the off-ramp phase with Coaching + Training.