Log every shot & pill
Tap to log doses, mark a missed one, and keep a clean history. Multi-medication and titration planning when you go Premium.
The muscle-first GLP-1 tracker
Lose fat. Keep muscle.
GLP-1 meds melt the scale, but a chunk of what you lose can be muscle, not fat. Myo tracks your shots, protein and training, then shows you whether you're recomposing or just shrinking. So you get to your goal lean, not depleted.
Download on theApp Store
Built with GLP-1 users in mind
Free core tracking, forever. Your data stays on your device.
Myo is not affiliated with the manufacturers of any GLP-1 medication.
The muscle-first problem
Are you losing fat, or muscle?
GLP-1 meds work. But the scale alone can't see the part that keeps you strong. Most people are flying blind on the thing that matters most:
On a GLP-1, up to ~40% of the weight you lose can be muscle, not fat
Your shots, protein, weight and side effects live in five different apps
The scale drops, but you can't tell if you're recomposing or just shrinking
Fat lost Lean lost
Fat-vs-muscle tracking
See what the scale can't
The scale only gives you one number. It can't tell the difference between fat leaving and muscle wasting away, and on a GLP-1, appetite suppression makes under-eating protein the default, not the exception.
Research suggests up to ~40% of weight lost on a GLP-1 can be lean mass, not fat. That's the part that keeps you strong, burns calories, and holds your results.
Split your weight into fat vs lean
Sync a smart scale, DEXA, or InBody and Myo separates the two so you can see what's actually changing.
Get flagged before muscle loss trends high
Myo watches your lean-mass trend and raises a flag early, while there's still time to fix protein and training.
Premium, where it counts
The deep tools for people who go all-in
When you're ready to optimize, Myo goes deeper than any reminder app: your own medication curve, body composition, site rotation, and supply tracking built for compounded vials.
Your Body's Curve
See your medication, not a textbook average
Myo models the pharmacokinetic curve for your exact dose, then builds a personal version from your own logs. You learn when your appetite suppression actually peaks and fades.
- Medication-level PK curve per dose
- A personal curve learned from your data
- Time your hardest meals for when hunger returns
Muscle vs fat
Prove you're losing fat, not muscle
The scale can't tell fat from muscle. Myo pulls body-composition data and resistance training together so you can see your lean mass holding while the fat comes off, week over week.
- Fat lost vs muscle lost, side by side
- A muscle-kept percentage you can actually defend
- Lean-mass line you want to keep flat, not falling
Injection site rotation
Never overuse the same spot twice
Rotating sites keeps absorption consistent and your skin healthy. Myo maps every injection on a body diagram and flags which spots are ready, resting, or overused before your next shot.
- Visual body map of every site you've used
- Ready / resting / overused status at a glance
- Clock-face precision for abdomen rotation
Supply & vial tracker
Built for compounded and microdosing
Log a shot and Myo previews your projected medication level, then auto-deducts from the vial and warns you before you run out. No more guessing how many doses are left.
- Projected med-level after every logged dose
- Auto-deduct per dose, with runout alerts
- Concentration, beyond-use date and titration
Everything in one place
Built for people who care about more than the scale
Track the whole picture: meds, body composition, nutrition and how you actually feel, without juggling five different apps.
Injection-site body map
Rotate sites the right way with a visual body map and rotation hints, so you avoid hammering the same spot twice.
Fat-vs-muscle tracking
Sync a smart scale, DEXA or InBody and Myo separates lean from fat, then flags when your muscle-loss trend creeps up.
Protein & resistance coaching
Hit protein targets that protect muscle and log resistance training. Myo nudges you when intake drifts below your goal.
Side-effects & correlations
Log 11 symptoms on a 0-10 scale with notes, then see how nausea, energy and cravings track with your dose and week phase.
Doctor-ready reports
Export a clean PDF or CSV for your next appointment: doses, weight, body comp and side effects, all in one place.
How it works
Three steps. No spreadsheet required.
Add your medication
Pick semaglutide, tirzepatide, a peptide or a compounded vial. Set your dose, schedule and reminders in under a minute.
Log shots, protein & training
One tap per shot. Quick protein and water logging. Mark your resistance sessions. Myo handles the math in the background.
See if you're keeping muscle
Watch your fat-vs-lean split, get an early flag if muscle loss trends high, and walk into your next appointment with a clean report.
People who came for the scale, stayed for the muscle
“I read the muscle-loss literature for a living, and almost no tracker actually surfaces lean mass. Myo puts fat and muscle side by side. That's the metric that matters on a GLP-1.”
Katrina J.
Medical researcher
“I had no idea how much muscle I might be losing until Myo showed the split every week. Seeing it changed how I eat and train. That focus is why I'm hooked.”
Mike B.
On tirzepatide
“Easy to log, and it finally answers the question I actually had: am I losing the right kind of weight? The protein nudges keep me honest.”
Michele P.
On semaglutide
From early Myo users. Individual results vary; not a guarantee of outcomes.
Pricing
No subscription trap
Core tracking and dose reference stay free, forever. Upgrade only when you want the deep recomp tools. Cancel anytime in two taps.
Free
Everything you need to start tracking.
$0forever
- 1 medication: shot logging with dose, injection site & time
- Injection-site body map with rotation hints
- Weight, lean-mass & muscle-vs-fat charts
- Side-effect logging (10 symptoms, 0–10 + notes)
- Daily check-in: hunger, food-noise, cravings, energy, mood
- Protein, fiber & water rings with reminders
- Reconstitution calculator + quick food search
- Apple Health sync (read + write), never paywalled
- Private iCloud sync, widgets & delete anytime
Premium
Best valueThe full muscle-first toolkit.
$39.99/year3-day free trial
or $8.99/month
- Track multiple medications at once
- Sharp medication-level curve + your personal “Your Body’s Curve”
- Fat-vs-muscle body comp + muscle-loss early warning (scale, DEXA or InBody)
- Plateau detection, goal ETA & pace-vs-trial benchmarks
- Weekly report card & doctor-ready PDF / CSV reports
- Side-effect trends & correlation charts
- Supply & vial tracker: concentration, beyond-use date, runout alerts
- Barcode + photo meal logging
- Titration, microdose & taper planners
- Site-rotation analytics, body measurements & unlimited progress photos
Prices in USD and may vary by region. Subscriptions are billed through your Apple ID and renew until cancelled.
About Myo
A GLP-1 tracker that watches your muscle, not just the scale
Myo is a muscle-first tracker for people on GLP-1 and dual-agonist medications like semaglutide and tirzepatide, the molecules behind Ozempic, Wegovy, Zepbound and Mounjaro. Most weight-loss apps stop at the number on the scale. Myo goes further, separating fat from lean mass so you can protect the muscle that keeps you strong, keeps your metabolism up, and holds your results long after the weight comes off.
Log your shots in a tap, hit protein targets that defend muscle, and record your training, side effects and daily check-ins in one place instead of five. Myo learns your personal medication curve from your own data, names the phase of the week you're in, and raises an early flag when your lean-mass trend starts to slip, while there's still time to fix it.
It was built with compounded and microdosing users in mind, too. The supply and vial tracker handles custom concentrations, beyond-use dates and auto-deduction per dose, so you always know exactly how much you have left. Your health data stays on your device and in your private iCloud, never sold, with full export and delete anytime.
Myo is free for one medication with all core features unlocked: no paywall on logging, the injection-site map, weight and side-effect tracking, or Apple Health sync. Premium adds the deep recomp tools when your protocol grows.
FAQ
Questions, answered
Is Myo medical advice?
No. Myo is for tracking and education only, not medical advice, diagnosis, or treatment. It helps you record and understand your own data, but every medical decision should be made with your healthcare provider.
Does it work with compounded meds?
Yes. Myo was built with compounded and microdosing users in mind. The supply and vial tracker handles custom concentrations, beyond-use dates, auto-deduction per dose, and runout alerts, exactly what off-the-shelf trackers miss.
Which medications does Myo support?
GLP-1 and dual-agonist meds like semaglutide and tirzepatide (the molecules behind Ozempic, Wegovy, Zepbound and Mounjaro), other peptides, and compounded formulations. You log by molecule and dose, so it works whether you're on a brand or a compound.
Is my data private?
Your health data stays on your device and in your private iCloud. Never sent to us, never sold. You can export everything or delete it permanently at any time.
Do I need a smart scale for fat-vs-muscle tracking?
It's better with one. Sync a smart scale, DEXA, or InBody for the most accurate fat-vs-lean split. Without one, Myo still works using estimates from your weight trend, protein and training. You just get more precision when you add real body-composition data.
Is Myo free?
Yes, core tracking and dose reference are free forever. That includes shot/pill logging, the injection-site map, weight and side-effect tracking, daily check-ins, manual macro rings, reminders, Apple Health sync, and full data export. No paywall on the basics.
What does Premium cost?
$6.99/month, $39.99/year (with a 7-day free trial), or $99.99 once for lifetime. Premium unlocks multi-medication, the PK curve and your personal body curve, week phases, fat-vs-muscle tracking with the muscle-loss flag, reports, the supply tracker, food logging and more. Cancel anytime in two taps.
Lose fat. Keep muscle.
Start free today. Track your shots, protect your muscle, and get to your goal as the strongest version of yourself.
Free core tracking, forever · No subscription trap · 18+