Your whole stack.One app.
Doses, levels, injection sites and reminders for your GLP-1 and peptide protocol. Private, precise and built for people who actually run cycles.
Catalog of 40+ peptides & GLP-1s
Built for people who run real protocols.
Stop juggling spreadsheets, Reddit threads and a notes app. MyPep turns your stack into a clear daily plan.
See your levels, skip the guesswork.
A pharmacokinetic estimator shows what's actually in your system right now, from 24 hours to 90 days out.
Current level
0.00mg
Retatrutide · rising
Peptide math, answered.
Reconstitution calculator built around insulin-syringe presets. mg → mL → units, instantly.
Units to draw
0
1.0
mg/mL
50%
fill
20
draws
Never miss a dose.
Recurring schedules with reminders and a daily Today view.
7:30
Tuesday, October 9
MyPep
now
Time for KPV · 2 mg. Tap to log today's dose.
Rotate sites, skip the sore spots.
Log every injection site and let the heatmap tell you where to go next.
This week
Your whole stack on one shelf.
Every vial with a live remaining-volume estimate. Share your stack as a card.
Reta
50 mg
Tirz
10 mg
BPC
5 mg
Remaining volume updates with every logged dose.
Three seconds a day. That's it.
- 01
Add your stack
Pick from 40+ peptides and GLP-1s, or add your own. Set concentration, vial size and schedule once.
- 02
Log in one tap
Dose, injection site, pain level and a note. Takes three seconds, straight from the reminder.
- 03
See what's working
Estimated levels, weight trend, progress photos and a site heatmap. All on one screen, all private.
4.5 on the App Store
Health & Fitness · Free with in-app subscription
“Finally one app for my GLP-1 and the rest of my stack. The levels chart alone is worth it.”
Mike R.
Tirzepatide + BPC-157
“The reconstitution calculator saved me from a dosing mistake in week one. Clean, fast, no fluff.”
Daniel K.
Retatrutide
“Site rotation with the heatmap is genius. No more sore spots, no more guessing where I injected last.”
Sarah L.
Semaglutide + GHK-Cu
Serious tool. Zero noise.
Private by design
Your protocol is personal. Data stays in your account and is never sold or shared with advertisers.
Sign in with Apple
One tap, no passwords, hide-my-email supported. Restore your data on any device.
A tracker, not a doctor
MyPep is for personal record-keeping. It doesn't prescribe or recommend doses. Always consult a licensed provider.
Run your stack
like a pro.
Free to download. Start logging in under a minute.
Requires iOS 26 or later · iPhone