PepTracker and Dose Track are both peptide tracker apps for iOS and Android, and both cover the basics well — dose logging, a reconstitution calculator, and reminders. The difference shows up once your protocol gets serious: whether the app just logs your doses or actually models your levels over time.
Transparency note: Dose Track publishes this comparison. We describe PepTracker fairly from its public listing and website — confirm current features and pricing on its own page before deciding.
If you want a clean dose log and a reliable reconstitution calculator on either platform, PepTracker does that well and you will not feel short-changed. Choose Dose Track when you need to see your levels between injections rather than just your injection dates — multiple compounds on one timeline, bloodwork read into it, and everything kept on-device.
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| Feature | Dose Track | PepTracker |
|---|---|---|
| Reconstitution calculator | Yes | Yes |
| Pharmacokinetic level charts (half-life) | Yes | — |
| Injection-site rotation | Yes | Yes |
| Vial & expiration tracking | Yes | Yes |
| Bloodwork / lab analysis | Yes | — |
| On-device / privacy-first | Yes | — |
| Compound library | 600+ | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Price | Free + Pro | Freemium |
Reflects publicly listed features as of June 2026. A dash means a feature wasn't advertised at the time of writing, not that it's impossible — confirm on the app's own listing.
PepTracker is a clean, approachable dose-log and protocol tracker for peptides, GLP-1 medications, and testosterone. Its built-in dose calculator converts vial amount, diluent volume, and target dose into the exact mL or insulin-syringe units to draw. If you mainly want straightforward logging plus a reliable calculator on both platforms, it does that job well.
Dose Track is the only one of the two that models true pharmacokinetics — every dose is charted as a decaying exponential against the compound's calibrated half-life and Tmax, so you see your actual plasma level between injections instead of just a log of dates. It ships with 600+ compounds, parses bloodwork PDFs on demand, rotates injection sites automatically, and keeps all health data on-device — nothing is sold or stored on a server. It runs on both iOS and Android.
This is the whole difference, so it is worth making concrete. Say you are running a peptide with a short half-life on a five-days-on, two-days-off schedule. A dose log tells you that you injected on Monday through Friday. It cannot tell you that by Sunday evening your estimated level has fallen further than it does on any other day of the week, or that the Monday dose is landing on a trough rather than topping up a plateau.
The same applies to a missed dose. In a log, a skipped Wednesday is a gap in a list. On a level chart it is a visible dip with a recovery curve, and you can see whether Thursday's dose brings you back to where you were or whether it takes until Saturday. That is the difference between knowing your schedule and knowing your exposure.
Dose Track builds that from each compound's calibrated half-life and Tmax rather than a generic curve, which is why the compound library matters as much as the charting does — a model is only as good as the constants underneath it.
It is worth being clear about the overlap, because it is substantial. Both apps run on iOS and Android. Both log doses and send reminders. Both include a reconstitution calculator that turns a vial size and a bacteriostatic water volume into the units to draw. Both track vials and expiry so you know when a batch is running out, and both handle injection-site rotation.
For a single peptide on a steady protocol, that shared feature set covers most of what anyone actually needs day to day. The divergence starts when you want to know not just when you dosed but where your levels are right now.
Feature rows come from each app's public App Store or Google Play listing and its own website, checked at the date noted under the table. A dash means a feature was not advertised at the time of writing — not that the app cannot do it, and not that it will not be added. Dose Track publishes this page, so treat the framing as ours and the facts as verifiable: every claim about the other app can be checked on its own listing, and we would rather you did.
If you want simple logging and a dose calculator, PepTracker is a fine choice. If you want to actually see your plasma levels between shots, run many compounds, analyze bloodwork, and keep your data fully on-device, Dose Track is the more capable peptide tracker.
The best peptide tracker is the one you'll actually open. Dose Track is free on the App Store (iOS 17+) and Google Play (Android):
Download on the App Store →
Get it on Google Play →
See also: Best Peptide Tracker Apps (2026) · Dose Track vs Shotsy · Dose Track features · Visit peptracker.app