Lose fat. Keep your muscle.
PepTrack is the GLP-1 companion that tracks more than your weight — your doses, your medication levels, your bloodwork, and the muscle most trackers ignore. One place to actually understand your progress.
Free to start. No card required. Informational tools only.
What you can do today
Log every dose in seconds
Track your GLP-1 schedule, keep a clean history of what you took and when, and never second-guess your last injection.
Medication-level curve
Visualize estimated drug levels over time from the half-life you enter — single dose or steady-state accumulation. The kind of chart other apps hide behind a paywall.
Reconstitution calculator
Enter vial size, water volume, and dose to get the exact draw in mL and insulin-syringe units, plus doses per vial. Results live in the URL — bookmark or share them.
Bloodwork trends
Log lab panels and watch each marker trend over time, so you can see how your body is actually responding — not just the number on the scale.
On the roadmap
Muscle-preservation coach
A daily protein target based on your bodyweight and goal, resistance-training nudges, and a lean-mass trend — because keeping muscle is the hard part of losing fat.
Body-composition tracking
Go beyond scale weight: track body fat and lean mass so progress means the right kind of loss.
Shareable progress pages
Turn your milestones into a clean, private-by-default page you can share when you want to.
Free calculators, no sign-up
Two tools you can use right now. The math runs on the numbers you enter — nothing here recommends a dose.
Ready to track what actually matters?
Create a free account and start logging today. Upgrade when you want the deeper analytics.