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If you reconstitute peptides, you need two things from an app: the math (how much water, how many units to draw) and a record (what you took, where, and how much is left in the vial). Plenty of apps now do both. This page lays out nine of them with what they cost, where they run, and how they are rated.
Disclosure: we make Dosify Me, so this is not an independent review. To keep it useful anyway, every competitor figure comes from that app's own store listing or website, checked on 29 September 2026, with a link so you can check it yourself. We list our own app last and say plainly where it is behind.
Research and informational use only — not medical advice. Check every figure against your own product and talk to a licensed healthcare provider before starting or changing anything.
| App | Runs on | Price | Store rating (29 September 2026) | Stands out for |
|---|---|---|---|---|
| PeptIQ | iPhone, Android, web | Free with a paid Pro tier | App Store 4.7 (898 ratings); Google Play 4.4 (645 ratings) | Largest rating base on both stores. Injection body map, reminders, inventory and refill alerts, half-life view, Oura and Apple Health. App Store · Google Play |
| PepCalc | iPhone, iPad, Mac, Apple Watch, Android | $9.99 one-time | App Store 4.8 (950 ratings); Google Play 4.6 (288 ratings) | A focused calculator: unlimited multi-peptide blends, saved protocols, solving backward for the water volume, sharing a protocol by QR code. App Store · Google Play |
| PeptideCalc (Peptide Tracker Calculator) | iPhone, iPad, Mac | $4.99 one-time | App Store 4.9 (240 ratings) | One-time price, data kept on the device with iCloud sync, blends of up to four peptides, protocol scheduling. No Android version. App Store · Website |
| Regimen | iPhone, Android | Free for one compound; Premium $4.99/month or $39.99/year | Google Play 4.8 (274 ratings) | The broadest health tracking: bloodwork and weight beside dose logs, cycles and titration, 200+ compounds, Apple Health and Health Connect. Google Play · Website |
| Smart Peptide Tracker | iPhone, iPad, Mac, Android | Free core app; one-time Premium purchase | Google Play 4.6 (302 ratings); App Store 4.5 (11 ratings) | Cost tracking in several currencies, a 100+ compound library with blends, a cycle planner, PIN lock, optional cloud sync. App Store · Google Play |
| Peptides Calculator | iPhone, iPad, Mac, Apple Watch, Android | Free with a paid Pro tier | App Store 4.3 (170 ratings); Google Play 4.4 (29 ratings) | Wide scope beyond peptides: GLP-1 logging, fasting timer, macros and lab results alongside the vial tracker and injection log. App Store · Google Play |
| PepSync | iPhone, Mac | Free with in-app purchases | App Store 4.6 (51 ratings) | Dose logging and reminders with vial-supply monitoring across several peptides. No Android version. App Store |
| PeptideJournal | iPhone, iPad, Mac, Apple Watch | $5.99 one-time | App Store 4.3 (20 ratings) | An interactive syringe gauge and reconstitution simulator, blends, local-only data with CSV import and export. No Android version. App Store |
| Dosify Me (ours) | Android phone and tablet, Wear OS, web app; iPhone in Apple review | $3.49/month or $29.99/year after a 3-day trial (no card to start) | Google Play: no ratings yet | Reconstitution math with the syringe drawn to the reading, schedules and reminders, body-map site rotation, vial countdown, half-life curve, backup and export, 15 languages. Google Play |
Ordered roughly by how many store ratings each app has, not by our preference. Ratings are rounded to one decimal.
Dosify Me is newer than most of the apps above. On Google Play it has no ratings yet, and the iPhone version is still in Apple's review, so if you need an app on iPhone today, pick one of the others. What it does well: it draws the syringe at the exact reading for your vial and dose, puts each scheduled dose on the home screen with Mark as taken, rotates injection sites on a body map, counts down the doses left in each vial, and estimates a half-life curve from your own logged doses. It runs in 15 languages and has 42 compound reference pages behind the calculator on this site. Your history stays on your phone; an account is optional and only needed to sync across your phone, tablet and the web app. It is a subscription ($3.49 a month or $29.99 a year) after a 3-day trial that needs no card to start.
We looked up each app on the App Store and Google Play on 29 September 2026 and read platforms, price and rating counts off the listings. Features come from each app's own description. We did not rate apps on accuracy. Every calculator here uses the same arithmetic, so check any app's first reading against the calculator or by hand before you rely on it. If you make one of these apps and something here is wrong or out of date, email [email protected] and we will correct it.
It depends on your phone and what you want to pay. On both iPhone and Android, PeptIQ and PepCalc have the most store ratings. On iPhone only, PeptideCalc is a one-time $4.99. For bloodwork and health data beside your doses, Regimen goes furthest. The table above lists what each one does, with links to check for yourself.
Of the apps compared here, PeptIQ, PepCalc, Regimen, Smart Peptide Tracker, Peptides Calculator and Dosify Me have Android versions. PeptideCalc, PepSync and PeptideJournal are Apple-only.
Dosify Me has a Wear OS app that shows the day's doses from the phone. Several of the apps above offer Apple Watch apps instead.
They were read from the App Store and Google Play listings on 29 September 2026. Ratings move, so follow the links for today's numbers.
Dosify Me does this math for you. Pick the compound, your vial size and dose, and the app draws the exact syringe reading, keeps your schedule and reminders, and logs every dose — privately, on your phone.
Competitor details checked 29 September 2026.