Regimen vs PepTracker: Which Peptide Tracker Is Right for You? (2026)
You're running a peptide protocol and you want an app that actually understands what that means. Not a generic medication reminder. Not a pill tracker with "injection" bolted on. Both PepTracker and Regimen were built with peptide users in mind, but they approach the problem differently.
Feature Comparison
| Feature | Regimen | PepTracker |
|---|---|---|
| Peptide dose logging | Yes | Yes |
| Protocol scheduling | Yes | Yes |
| Syringe / reconstitution calculator | Yes (built into compound profiles) | Yes |
| Half-life visualizer (blood level curves) | Yes | No |
| Medication-to-health-metrics correlation | Yes | No |
| Injection site rotation with body map | Yes | No |
| Compound library | 600+ compounds | Peptide focused |
| Apple Health / Google Health Connect | Yes | No |
| Progress photos (side-by-side) | Yes | No |
| Smart dose reminders | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | No |
| Pricing | Free for 1 compound, $4.99/mo premium | Freemium, $4.99/mo |
Regimen
Regimen is a peptide tracker that's completely free for one compound with every feature unlocked. You get PK curves that show how your compound levels rise and fall between doses, injection site rotation with a body map, and health metric correlation that connects your sleep, body fat %, weight, and more to your dosing timeline via Apple Health or Google Health Connect.
The medication-to-health correlation is the differentiator here. You can actually see whether your sleep improved after starting DSIP, or whether your body fat shifted during a BPC-157 cycle. That turns dose logging from a chore into actionable data.
Regimen pulls from a library of 600+ compounds and works on both iOS and Android. Premium ($4.99/mo or $39.99/yr) unlocks tracking for multiple compounds when you're stacking.
PepTracker
PepTracker has the largest user base of any peptide-specific tracker — 285 reviews at a 4.69-star rating on iOS. That kind of track record matters. The app handles protocol scheduling, dose logging, and reconstitution math well, and updates are frequent (last updated March 2026).
The free tier covers two protocols, which works if you're running one or two peptides. Beyond that, you're looking at $4.99/mo or $47.99/yr.
The tradeoffs: PepTracker is iOS only, so Android users are out. There's no half-life visualization, no health metric correlation, and no injection site mapping. If you want to see how a peptide is affecting your sleep or body composition, you'll need to track that separately.
Track your peptide protocol for free
- PK curves, injection site rotation, health metric correlation
- One compound free forever, no feature paywalls
- Available on iPhone and Android
Frequently Asked Questions
Ready to track your protocol?
- Smart reminders so you never miss a dose
- Track weight, photos, and progress over time
- Medication level curves for every compound