If you run peptides, TRT, or GLP-1 protocols, a good peptide tracker turns a notebook of vials, BAC ratios, and injection dates into something you can actually reason about. The best peptide tracker apps go beyond a checklist — they calculate your reconstitution, chart your plasma levels against each compound's half-life, and remind you before a dose slips.
We compared the most popular peptide tracker apps available in 2026 on the features that matter: a reconstitution calculator, pharmacokinetic level charting, injection-site rotation, vial/expiration tracking, privacy, and whether they're on both iPhone and Android. Here's how they stack up.
Transparency note: Dose Track publishes this comparison. We've tried to describe every alternative fairly from its public app listing and website — verify current features and pricing on each app's own page before deciding.
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| Feature | Dose Track | PepTracker | PeptIQ | PeptidePro | Smart Peptide Tracker |
|---|---|---|---|---|---|
| Reconstitution calculator | Yes | Yes | Yes | Yes | Yes |
| Pharmacokinetic level charts (half-life) | Yes | — | — | — | — |
| Injection-site rotation | Yes | Yes | Yes | — | — |
| Vial & expiration tracking | Yes | Yes | Yes | Yes | Yes |
| Bloodwork / lab analysis | Yes | — | Yes | — | — |
| On-device / privacy-first | Yes | — | — | — | — |
| iOS & Android | Both | Both | Both | Web/iOS | Android |
Comparison reflects each app's publicly listed features as of June 2026. A dash means the feature wasn't advertised at the time of writing, not that it's impossible — confirm on the app's own listing.
Dose Track is the most complete peptide tracker we tested. It's the only app on this list that models true pharmacokinetics — every dose is charted as a decaying exponential against the compound's half-life and Tmax, so you see your actual plasma level between injections rather than just a log of dates. The built-in reconstitution calculator turns vial size and bacteriostatic water into exact insulin-syringe units, and it ships with 600+ calibrated compounds (BPC-157, Ipamorelin, HGH, semaglutide, tirzepatide, testosterone esters, and more). Bloodwork PDFs are parsed on demand, injection sites rotate automatically, and all health data stays on-device — nothing is sold or stored on a server.
PepTracker is a focused dose-log and protocol tracker for peptides, GLP-1 medications, and testosterone, with a built-in dose calculator that converts vial amount, diluent volume, and target dose into the exact mL or insulin-syringe units to draw. It's a tidy, approachable option on both platforms if you mainly want logging plus a calculator and don't need plasma-level modeling.
PeptIQ pairs tracking tools with a strong educational library, aimed at people who want to learn the "why" behind their protocol alongside logging it. It's available on iOS and Android with web access, making it a good pick if reference content and guidance matter as much as the tracking itself.
PeptidePro positions itself as an all-in-one peptide tool, bundling calculators and tracking utilities in one place. If you want a single web-based companion for reconstitution and dose math, it's worth a look — though it's lighter on the longitudinal level-charting and on-device privacy features that set the top picks apart.
Smart Peptide Tracker leans into stack analysis — its Stack Analyzer scores your protocol across dimensions like synergy, redundancy, side effects, and evidence quality, visualized on a radar chart. It's an Android-first app with a one-time premium unlock, and a reasonable choice if comparing and scoring stacks is your priority.
Peptide Tracker & Calculator is a straightforward iOS option centered on the reconstitution-and-dose math, with basic tracking on top. If you're on iPhone and want a no-frills calculator-first tool, it covers the essentials.
We weighted the features that change real-world outcomes for injectable protocols:
Most peptide tracker apps are logs with a calculator bolted on. Dose Track is the one that treats your protocol like the pharmacokinetic system it actually is: doses sum as decaying exponentials against calibrated half-lives, so a missed weekly shot visibly drops your trough for two weeks instead of disappearing into a checklist. Add the on-device privacy model, 600+ compounds, bloodwork parsing, and both iOS and Android, and it's the most capable peptide tracker you can install today.
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):