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Peptide Tracker app iconPeptide Calculator
iPhone · Apple Watch · Widgets

Stop doing vial math in your head.

Peptide Calculator: Dosage Log turns any vial + any dose into the exact units on your U-100 syringe — instantly. Built-in protocols for Semaglutide, Tirzepatide, BPC-157 and 40+ more, with reminders, body-map rotation, Apple Watch logging, and a doctor-ready PDF.

Download on theApp StoreTry the free calculator
  • Offline-first · no account
  • On-device data · no selling
  • Built for adults 18+
  • Not medical advice
Reconstitution
Semaglutide · 10 mg vial · 2 ml BAC
Draw on U-100
5units
for a 0.25 mg dose
Vial
10 mg
BAC
2 ml
Conc.
5 mg/ml
Dose
0.25 mg
Volume
0.05 ml
Syringe
U-100

Not medical advice. Always verify against your vial label.

  • Offline-first
  • No ads, no data selling
  • On-device data
  • Adults 18+ · Not medical advice

Try it now. Free, no signup.

Same math as the iOS app. Punch in your vial, BAC water, and dose — see the exact units to draw.

Syringe
Draw on U-100
5.00units
Concentration
5.00 mg/ml
Volume
0.050 ml
Per ml
100 units
Want history, smart reminders, body-map rotation, Apple Watch, and a doctor-ready PDF?See the full calculator

One source of truth

Calculator, log, and protocol engine — in one place.

Most apps are either a calculator or a tracker. Peptide Calculator: Dosage Log bundles math, schedule, body map, watch, and provider export.

  • Reconstitution math

    Vial mg + BAC ml + target dose → exact units to draw, every time.

  • Titration on autopilot

    36 protocol templates — Sema, Tirz, Reta, BPC-157, more — auto-advance week by week.

  • Smart reminders

    Per-protocol notifications. Missed-dose detection. One-tap log from the lock screen.

  • Body-map rotation

    Tap a body region. The app remembers, color-codes recency, and prevents same-site reuse.

  • Weight & side-effect insight

    Watch your trend with dose markers. Track 13 GLP-1 side effects so you spot patterns.

  • Apple Watch + widgets

    Confirm a dose from your wrist. See the next dose on your Home & Lock Screen.

  • Vial-expiry watch

    Three-day expiry warnings. "Reorder soon" nudges at 25% remaining.

  • Doctor-ready PDF

    Export your full log — doses, sites, side effects, weight — in one polished file.

10 screens, end to end

From the first dose to the doctor visit.

No more napkin math

No more napkin math

Vial mg + BAC water + target dose → exact U-100 units.

Titration on autopilot

Titration on autopilot

Multi-phase protocols ramp themselves. You just inject.

Watch the loss

Watch the loss

Your weight curve, with every dose escalation marked.

Spot your pattern

Spot your pattern

Track 13 GLP-1 side effects. See what eases as your body adapts.

Rotate without thinking

Rotate without thinking

Body map remembers every site. Zero rotation guesswork.

Know before it spoils

Know before it spoils

Get warned 3 days before your vial expires.

Log from your wrist

Log from your wrist

Confirm a dose in 2 seconds, from your wrist.

Next dose at a glance

Next dose at a glance

Today's dose on your Home Screen — always.

Start with 36 protocols

Start with 36 protocols

Sema, Tirz, BPC-157, Wolverine — start in one tap.

Doctor-ready PDF

Doctor-ready PDF

Doses, sites, side effects, weight — all in one file.

How we built it

Three principles. No compromises.

  • Math you can trust

    Built for the user who refuses to guess. Every result is shown with concentration, volume, and units side-by-side so you can verify it against the vial.

  • Reminders that respect you

    Per-protocol notifications, missed-dose detection, lock-screen logging. No streaks, no nagging, no ads.

  • Records you can hand a doctor

    Doses, sites, side effects, weight — exported as a clean PDF or CSV. Your data lives on your device, not a server.

Common questions

Answers, not hype.

  • It is a calculator and tracker for peptide users. Enter a vial size, the bacteriostatic water you added, and a target dose — it returns the exact units to draw on a U-100 syringe. The iOS app adds protocol templates, smart reminders, body-map injection-site rotation, an Apple Watch app, Home Screen widgets, and a doctor-ready PDF export.

  • 44 peptides are pre-loaded — Semaglutide, Tirzepatide, Retatrutide, Liraglutide, BPC-157, TB-500, Ipamorelin, CJC-1295 (DAC and No-DAC), Sermorelin, Tesamorelin, GHK-Cu, MOTS-c, AOD-9604, Melanotan II, PT-141, Epithalon, NAD+, SS-31, Glutathione, and many more across GLP-1, healing, growth hormone, muscle, nootropic, sleep, immune, longevity, cellular, hormonal, cosmetic, sexual, and metabolic categories.

  • No. Peptide Calculator Log is an informational and tracking tool. Always consult a licensed healthcare provider before starting, modifying, or stopping any peptide or medication protocol. Verify every calculation against your vial label and your provider's instructions.

  • Yes. Your protocols, logs, and calculations stay on your device. There is no account, no email signup, and no data selling. Aggregate usage analytics may be collected to improve the app.

  • Yes. The calculator, protocols, body map, and logs all work offline. Apple Health sync requires permission and runs in the background once granted.

  • Yes — Peptide Calculator Log includes a watchOS 10+ companion app. Confirm a dose from your wrist, see your next dose on a watch tile, and let the iPhone keep your full history in sync.

  • The app is free to download from the App Store. Some advanced features are part of an in-app subscription managed entirely by Apple — see the App Store listing for current pricing in your region.

  • Because we want anyone to be able to verify a dose, no install required. The app exists for the people who want history, reminders, body-map rotation, watch logging, and a doctor-ready PDF.

Stop guessing. Start logging.

Free to install. Built for adults 18+. Not medical advice — your provider has the final say.

Download on theApp Store