🔒 100% On-Device · No Account Required

The private GLP-1 dose calculator for iPhone.

Calculate peptide doses, track vials, and build medication profiles — without giving your data to anyone. No servers. No cloud. Everything stays on your phone.

Download on the App Store See what it does

Free to download · iOS 17+ · iPhone & iPad

📱
On-Device Only
Nothing leaves your iPhone
🚫
No Account
Open the app and go
👁️
No Analytics
Zero tracking or profiling
💊
Built for GLP-1s
Sema, tirze, peptides, and more
Features

Everything you need to dose with confidence.

From reconstitution math to vial tracking to titration schedules — Peptly Calc handles the numbers so you don't have to do it in your head.

🧮
Dose Calculator
Enter your peptide amount and BAC water volume — get the exact draw volume in units and mL instantly. Works for any peptide: semaglutide, tirzepatide, BPC-157, and more.
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Saved Profiles
Save your medication configurations by name. Switch between compounds in one tap — no re-entering your vial setup every time.
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Vial Tracker
Track remaining volume across vials with dates and notes. Always know how much is left and when to order your next supply.
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Titration Planner
Build out a titration schedule — increasing doses over time — and have Peptly Calc track exactly where you are in your protocol.
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Dose Log
Record each dose as you take it. Build a running history of what you took and when — useful for tracking patterns or sharing with your provider.
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Private by Architecture
There is no server to breach. Your dose data lives in an encrypted, sandboxed container on your device. We can't access it because we simply don't have it.
How it works

Reconstitution math made simple.

GLP-1 dose calculation requires three numbers. Peptly Calc does the rest.

1
Enter your vial
Input the peptide amount (mg) in your vial and how much BAC water you added (mL) to reconstitute it.
2
Set your dose
Enter the dose you want to take (mcg or mg). Peptly Calc calculates the draw volume in both units and mL.
3
Save and track
Save the profile, log the dose, and watch your vial inventory update automatically as you go.
Privacy

Your doses are not our business.

Peptide and GLP-1 data is sensitive. We built Peptly Calc with a single non-negotiable: your information never leaves your device.

  • ✓
    No servers store your calculations, vials, or dose history
  • ✓
    No account required — open and use immediately
  • ✓
    No analytics tools tracking your in-app behavior
  • ✓
    No third parties receive your data, ever
  • ✓
    Delete the app and all data is gone — permanently
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The short version

Peptly Calc has no servers, no accounts, and no technical ability to access your data — because we simply don't have it. Everything you enter is stored in your device's private, sandboxed SwiftData container. Only you can see it.


If you have iCloud Backup enabled, your data may be included in your encrypted personal iCloud backup. That backup is accessible only to you via your Apple ID.

Pricing

Start free. Upgrade when you're ready.

Peptly Calc is free to download. Premium unlocks unlimited saved profiles, vials, and full dose history.

Free
$0
forever
  • Dose calculator
  • 2 saved medication profiles
  • 2 active vial trackers
  • 30-day dose log
  • On-device private storage
Download Free
Most Popular
Premium
$3.99 / mo
or $29.99/year · 7-day free trial
  • Unlimited medication profiles
  • Unlimited vial trackers
  • Full dose history (no limit)
  • Titration planner
  • All future features included
Start Free Trial

Billed via the App Store. Cancel anytime in two taps — iOS Settings → Subscriptions. No hidden fees. No access to your payment details.

Stop doing the math in your head.

Peptly Calc is free to download and works offline, instantly, with no account required. Your data stays exactly where it belongs — on your device.

Download on the App Store

Free · iOS 17+ · iPhone & iPad