Regimen vs Shotlee: Which Injection Tracker Is Right for You? (2026)
Shotlee and Regimen both position as multi-category injection trackers covering GLP-1 medications, peptides, and TRT. Both apps let you log doses, set reminders, and visualize medication levels. But they take very different approaches to what tracking actually means, and they are at very different stages of maturity.
Feature Comparison
| Feature | Regimen | Shotlee |
|---|---|---|
| GLP-1 / peptide / TRT tracking | Yes (600+ compounds) | Yes |
| Dose logging and reminders | Yes | Yes |
| Half-life visualizer (PK curves) | Yes | Medication level predictions |
| Health metric correlation | Yes (weight, body fat %, sleep, BP, HRV, RHR) | Not confirmed |
| Apple Health / Google Health Connect | Yes | Not confirmed |
| Injection site rotation | Yes | Not confirmed |
| Reconstitution calculator | Yes (14+ free web calculators) | Not confirmed |
| Progress photos (side-by-side) | Yes | Not confirmed |
| AI-powered insights | No | Advertised |
| Vial management / dose escalation | No | Advertised |
| iOS + Android | Yes | iOS (Android unconfirmed) |
| Ratings | 4.9 stars (iOS + Android) | No reviews yet |
| Pricing | Free for 1 compound (all features), $4.99/mo premium | Not confirmed |
Regimen
Regimen is free for one compound with every feature unlocked. No paywall, no trial, no credit card. You get PK curves showing how your compound levels rise and fall between doses, injection site rotation tracking, and a built-in reconstitution calculator. Premium ($4.99/mo or $39.99/yr) unlocks unlimited compounds for stacking.
The standout feature is health metric correlation. Regimen syncs with Apple Health and Google Health Connect to pull in weight, body fat %, blood pressure, sleep, HRV, and resting heart rate, then maps those metrics against your dosing timeline. You can actually see whether your GLP-1 is moving the scale, whether your peptide stack is improving your sleep, or whether splitting your TRT dose stabilized your blood pressure. That turns dose logging into actionable data.
With 600+ compounds sourced from published clinical studies and FDA prescribing information, Regimen covers the full range: GLP-1s, peptides, testosterone esters, HCG, aromatase inhibitors, and performance compounds. It runs on both iOS and Android with a 4.9-star rating.
Shotlee
Shotlee positions as an all-in-one injection tracker with AI-powered insights, medication level predictions, and dose escalation tools. The app covers GLP-1 medications, peptides, and TRT, and its marketing emphasizes custom dosing, vial management, and side effect tracking. Those are useful features if they deliver as described.
Shotlee also publishes strong educational content on its website, with dedicated pages for semaglutide tracking, injection tracking, and peptide tracking. If you are researching your options, their site is worth reading for the educational value alone.
The caveat: Shotlee is very new. It launched recently on iOS with zero public reviews as of March 2026. That does not mean the app is bad. Every app starts somewhere. But there is no community track record to evaluate yet, and some advertised features could not be independently verified from public sources. If you are considering Shotlee, it is worth downloading and testing it yourself.
Track your 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