Cloud apps lock you out
Data gone when they change pricing or shut down.
Peptide Log
Track injections. Private by default.
No account. No subscription. Your GLP-1 data stays on your iPhone.
Private by default
No account needed
On your iPhone
No cloud required
Privacy-first
You're in control
Why I built this
I lost 6 months of injection history to a cloud app.
Most GLP-1 tracker apps require an account, charge a subscription, and store your health data on their servers. Peptide Log is different.
Subscriptions for basic logging
$15/month just to track a weekly injection.
Your health data on their servers
Injection logs, weight, side effects — who else sees it?
App features
Private & secure
Private by default. Ready for your doctor.
Your data stays private on your iPhone. Optional iCloud sync goes to your own account only. Need to share? Export a clean PDF or CSV for your next doctor visit.
History that matters
Every shot, tracked.
See your full injection, weight, and symptom history in one place. Filter by medication to spot patterns and stay in control of your dose schedule and injection site rotation.
Medication levels
Know where you stand between doses.
See your estimated medication level on a half-life chart — so you understand where Semaglutide or Tirzepatide sits between injections. Recent activity keeps your last shots and weight entries in one place.
Multi-medication
Every medication, tracked separately.
Switch between Semaglutide and Tirzepatide — often sold as Ozempic, Wegovy, Mounjaro, or Zepbound — each with its own titration schedule, next-dose reminder, and injection log.
FAQ
Questions about Peptide Log
What is Peptide Log?
Peptide Log is a private GLP-1 and peptide injection tracker for iPhone. It helps you log Semaglutide and Tirzepatide doses, track injection sites, monitor weight trends, log side effects, and export your history for your doctor — all without creating an account.
Does Peptide Log work with Semaglutide and Tirzepatide?
Yes. Peptide Log tracks Semaglutide and Tirzepatide — the generic compounds behind medications often sold as Ozempic, Wegovy, Mounjaro, and Zepbound. Each medication gets its own schedule, titration plan, and injection history.
Is Peptide Log free? Does it require a subscription?
Peptide Log is free during the beta. Beta users get lifetime free access to future premium features. There is no subscription required to log injections, track weight, or export your data.
Is my injection and weight data private?
Yes. By default, all data stays on your iPhone — no account, no cloud, no tracking. Optional iCloud sync sends data to your own private iCloud account only, never to Peptide Log servers.
Can I export my injection history for my doctor?
Yes. Peptide Log lets you export your full injection, weight, and side effect history as a PDF or CSV in one tap — ready for your next doctor visit.
Does Peptide Log sync between my devices?
iCloud sync is off by default. When you turn it on in Settings, your data syncs to your own private iCloud account across your Apple devices — never to our servers.
Beta
Join the beta.
Be one of the first 100 beta testers for the private GLP-1 tracker built by someone who uses it.
No data collection
iOS native
Privacy-first
No subscription
"I built this after losing my own injection data to a cloud app that raised its prices. One person, one app — no company harvesting your health data."
Solo dev, Peptide Log
Built for GLP-1 patients who want control of their data
iCloud Sync is off by default. When enabled, your data syncs to your own private iCloud account, never to our servers.
Get early access to the private GLP-1 tracker.
Beta users get lifetime free access to future premium features. Track Semaglutide, Tirzepatide, weight, and side effects — no account required.
We'll email you when beta access opens.
Peptide Log is for tracking and informational purposes only. It does not provide medical advice, diagnosis, or treatment. Always consult your healthcare provider before making any medical decisions.