Best Peptide Tracker Apps (2026)
A peptide tracker should do four things well: calculate your reconstitution and syringe-unit draw, remind you on schedule, log doses with sites and side effects, and track vial inventory so you never run out mid-protocol. Here are the standouts in 2026 — grouped by what each is best at, so you can pick for your use case.
What to look for
- Reconstitution & syringe-unit calculator — the core math (try ours free).
- Flexible scheduling & reminders — daily, every-other-day, cycles with on/off days.
- Dose logging — with injection-site rotation and side-effect tracking.
- Inventory, refill & expiration alerts — so a vial never sneaks up on you.
- Nice-to-haves — Apple Health, a provider-ready PDF report, and pharmacokinetic charts.
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1 PeptideWiz Best for provider-directed protocols
Built around running a protocol day to day: a reconstitution + syringe-unit calculator (with free per-compound web versions), flexible scheduling including on/off cycles, dose logging with sites and side effects, and a real emphasis on inventory, refill, and expiration reminders. Adds Apple Health (weight/HRV/sleep), a doctor-ready PDF report, CSV export, Sign in with Apple, and privacy-level controls on notifications. Free for one item; Pro is $4.99/month or $39.99/year for unlimited. iPhone only. It doesn’t yet do pharmacokinetic curves.
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2 Regimen Best for data & pharmacokinetics
A polished tracker whose signature features are pharmacokinetic (half-life) concentration curves and a correlation engine that plots symptoms, weight, sleep, and bloodwork against your dose timeline. Large compound library, injection-site rotation, Apple Health + Health Connect, and both iOS and Android. Free tier covers one compound with full features; subscription is in the same range as PeptideWiz. The best pick if PK modeling or Android matters to you.
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3 Shotsy Best for GLP-1 / weight-loss shots
Purpose-built for GLP-1 users (semaglutide, tirzepatide) rather than general peptides: weekly dose tracking, weight charts, home-screen widgets, and a medication-level chart. Great if your focus is GLP-1 weight management specifically; less suited to multi-peptide reconstitution protocols. Free tier plus a subscription (around $50/year at the time of writing).
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4 PepTracker Best free starting point
A straightforward dose logger with a calculator and syringe visuals, and one of the larger user bases among dedicated peptide apps. A good no-cost way to start; its free tier covers a few protocols, with a subscription for unlimited tracking and extras. Lighter on inventory and health integrations.
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5 PeptIQ Most features, premium price
The most feature-dense option — half-life tracking, blend support, an AI vial scanner, and cross-platform (iOS, Android, web) — at a premium subscription (around $99/year at the time of writing). Worth a look if you want everything in one app and don’t mind the price or a heavier AI layer.
How to choose
If you run provider-directed protocols and want inventory, reminders, and clean reports, PeptideWiz is built for exactly that. If you want pharmacokinetic modeling or Android, look at Regimen. If you’re strictly a GLP-1 / weight-loss user, Shotsy is tailored to you. And if you just want to start free, PepTracker or the free tier of PeptideWiz both work — or use a free web calculator with no signup at all.
How we compare. This comparison is based on publicly available information as of July 2026. App features, pricing, and availability change frequently — always verify the current details on each app’s App Store listing before deciding. PeptideWiz is the maker of this page; we’ve aimed to describe other apps fairly, including where they do something we don’t.