"Peptide Tracker" (the Peptide Tracker & Calculator app) and Dose Track both help you handle peptide reconstitution and dosing. Despite the name, Peptide Tracker is more than a calculator: it charts levels from half-life, rotates injection sites, tracks vials and logs bloodwork, and it keeps your data on your phone. On features the two are close. The differences are platform and how much the library covers.
Transparency note: Dose Track publishes this comparison. Everything about Peptide Tracker below comes from its App Store listing and its website, checked October 31, 2026 and linked under Sources. Apps change quickly, so check its current listing before deciding.
Dose Track is the better pick for most people. Both chart levels, rotate sites, track vials and keep bloodwork; Dose Track also runs on Android, puts GLP-1s and TRT alongside peptides, and has research pages for 428 compounds within 800+ medications and supplements. Peptide Tracker is worth a look for the extras listed further down.
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| Feature | Dose Track | Peptide Tracker |
|---|---|---|
| Reconstitution calculator | Yes, both directions, in the app and free on dosetrack.app | Yes |
| Pharmacokinetic level charts (half-life) | Yes. An estimated curve for each medication it models, from its half-life | Yes |
| Injection-site rotation | Yes. Suggests the next site, with a rest window you set and a site history | Yes, with next-site suggestions |
| Vial & expiration tracking | Yes. Doses left in each vial, its mix date and use-by date, and a run-out warning | Yes |
| Bloodwork / lab analysis | Yes. Reads lab PDFs and photos, or type results in, and keeps markers over time | Yes: logging against ranges, lab report scanning, CSV import |
| Private by default (data on your phone) | Yes. Records stay on your phone, with no account needed | Yes |
| Where your data lives | On your phone by default. Optional encrypted backup only your password opens | On your phone, no account needed. Optional iCloud sync |
| Compound library | 800+ medications and supplements. 428 have a research page with how it works, safety, FDA status and references, most with studied doses. Plus guides and an interaction checker | 100+ compounds and blends, with half-life data |
| iOS | Yes. On the App Store now | Yes |
| Android | Yes. On Google Play now | No, iPhone only |
Reflects publicly listed features as of October 31, 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.
Peptide Tracker & Calculator covers far more than its name. Next to the reconstitution calculator it draws half-life level charts, rotates injection sites and suggests the next one, tracks vials and expiry, and logs bloodwork against reference ranges, with lab report scanning and CSV import. Its library holds 100+ compounds and blends with half-life data. Data stays on your phone with no account, and iCloud sync is optional.
It is rated 4.8 from 590 ratings on the App Store. If you are on iPhone and track peptides, it is a capable choice.
The clearest difference is Android. Peptide Tracker is iPhone only; Dose Track runs on iOS and Android, so switching phones does not mean switching trackers.
The second is breadth. Dose Track ships with 800+ medications and supplements, so GLP-1s, testosterone esters and peptides can sit on the same timeline with their levels modeled together, each from its own half-life and Tmax. It counts down each vial as you log, warns before you run out, and tracks every compound in a blend separately. It stores health records on your phone, with no account needed. Data only leaves it for features you choose, like AI answers and lab reading, and nothing is sold.
Whether those matter depends on your protocol. If it is peptides only, on an iPhone, they may not.
Research is built in. Of the 800+ medications and supplements, 428 have a research page: how the compound works, its safety, FDA status and references, and for most, the doses studied in research. A Learn section adds guides, an interaction checker and a stack finder, and dosetrack.app has 650+ free compound pages. None of it is a dose recommendation.
A calculator answers one question perfectly: how many units do I draw? For a lot of protocols that really is the hard part, and nothing else is needed.
It stops being enough at a predictable point. You add a second compound, and now the two have different half-lives and different schedules, and there is no single place showing you both. Or you change a dose mid-cycle and want to know how long the new level takes to settle. Or you get bloodwork back and want to know what your levels were on the morning of the draw, not just what you were prescribed. None of those are calculator questions. Both of these apps go past the calculator here: each charts levels and keeps your bloodwork.
The other thing a calculator cannot do is remember the vial. Once you have mixed it, the ratio matters for every future draw, and so does how much is left. Dose Track saves the ratio when you confirm a reconstitution, subtracts each logged draw from the remaining volume, and warns you before a vial runs dry — so you mix the next one ahead of time instead of discovering it mid-protocol.
Both apps solve the problem that brings most people to a peptide tracker in the first place: turning a vial size and a water volume into a number of units to draw, and keeping track of what is left in the vial. Past that, the overlap is large: both chart levels from half-life, rotate injection sites, track vial expiry, keep bloodwork, and store your data on your phone without an account.
You can try Dose Track's version of that math without installing anything — the reconstitution calculator runs free in a browser, and it works backwards from the dose you want to the water volume you should add.
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 something here is out of date, email hello@dosetrack.app and we will fix it.
On features these two are close: both chart levels, rotate sites, track vials, keep bloodwork and store data on your phone. Dose Track is the better pick for most people: it runs on Android too, and puts GLP-1s, TRT and peptides in one 800+ medications and supplements library with research pages for 428 compounds.
The best peptide tracker is the one you'll actually open. Get Dose Track 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 · View Peptide Tracker on the App Store