For people on GLP-1 medication or peptides
Your progress is bigger than the scale.
See your food, medication and weekly measurements together — and the trend behind the number.
Free to track · estimates, not a DEXA scan
Free progress check · no sign-up · nothing stored
See how far you’ve really come — free
Enter your starting and current weight and waist. In about 30 seconds you get your change, the percentage of your starting weight and your weekly average. Then add a weekly waist measurement for an estimate of fat and fat-free mass, week by week.
Example result
- Weight change
- −25.0 lb
- Of starting weight
- 10.9%
- Average per week
- −2.0 lb
- Waist change
- −3.0 in
How it works
One simple routine
- 1
Log what matters
Medication, food, weight and tape measurements — in one quick weekly routine.
- 2
See your trends
Body-composition estimates from your weekly waist measurement — never assumed from weight alone.
- 3
Choose coaching when you want it
Bring in a real human coach to read your week — optional, never automatic.
Everything here is free
Free inside Composa
Tap through the app — your composition, daily log, photos and medication, all in one place.
The trend behind the number.
A weekly estimate of how your body composition is trending, from your weight and tape measurements — with a plain statement of where each figure came from.
Sample screen with example figures. Not a real member, and not a typical or promised result.
Start freeWhy you can trust the numbers
We’d rather show nothing than invent a number.
When there aren’t enough readings to stand behind a figure, Composa leaves it blank — no guessed trend lines, no fake precision. Your body-composition estimate builds from your own weight and tape measurements as they add up over the weeks.
- Estimated trends, not a DEXA scan
- No invented numbers, ever
- Your data stays yours
Body-composition trends are estimated from your weight and tape measurements.
See it in 30 seconds
Watch what the scale can’t show you.
Explainer video. The people shown are AI-generated actors, not Composa members or coaches.
Optional human coaching
A real coach reads your week — when you want one.
Bring in an assigned human coach who reads your weekly check-in alongside your progress and writes back — by text or voice. Asynchronous, built on your own record.
See how coaching works →- Check in
- Coach reads your week
- Personal feedback
- Adjust
- Review
Example weekly review
- Looked at: 5 weigh-ins, Sunday tape, protein 6/7 days
- What stood out: protein hit target on 4 days
- For next week: protein-first snack on low-appetite afternoons
- Not covered: dose or side effects — those go to your prescriber
Written for this page — not a real member or a promised result.
Asynchronous support — not live chat or 24/7. Messages are for non-urgent questions between check-ins. This is asynchronous coaching, not live chat. Replies are not instant. Your Coach reviews messages during coaching work periods and may combine several messages into one response. For urgent medical concerns, contact your healthcare professional or emergency services. Medication decisions stay with your prescriber.
Pricing
Start free. Add a coach only if you want one.
Basic
Free
The full tracking routine, no card to begin.
- Medication & peptide log with reminders
- Food diary — search & barcode scan
- Weight, tape & body-composition estimates
- Daily log & private progress photos
- Export your data any time
Personal coaching
By application
A real, assigned human coach for your weekly check-in.
- A named human coach
- Weekly check-in read & reviewed
- Personal written or voice feedback
- Messages between check-ins
- Off-ramp & maintenance planning
Composa Plus and personal training are not on sale yet.
FAQ
Questions, answered honestly
Is Composa free?
Yes — all core tracking is free: food diary with barcode scan, medication and peptide log with reminders, weight, tape measurements, body-composition estimates and private progress photos. You create a free account to save your data; no card. Human coaching is optional and paid.
Who is it for?
Anyone on GLP-1 medication — just starting and wanting simple structure, wanting to see more than the scale, or further along and focused on keeping results.
How accurate are the body-composition estimates?
They are estimates from your weight and tape measurements, not a DEXA scan, and most useful as a trend over weeks. Fat-free mass includes muscle, water, bone and organs, so it is a guide — not a muscle measurement. Without a waist measurement there is no estimate: the split is never assumed from weight alone, and an older estimate is always shown with its date.
What won’t Composa do?
Not dosing advice — ever. Not a diagnosis or medical advice, and not a medical device. No AI pretending to be your coach — coaching is a real human. Medication decisions stay with your prescriber.
What exactly is the coaching?
A named human coach is assigned to you. Each week they read your check-in alongside your logged progress and reply by text or voice note. Messages between check-ins are asynchronous — not live chat, and not 24/7.
Do I need an account?
To track, yes — free, with your email. To try it first, the GLP-1 Progress Check works without signing up.
Find out what the scale isn’t telling you.
Free to start — all you need is your weight.
Start freeFree to track · no card
Not ready? Try the free progress check ↑