Built by one person
One person, one app, one obsession.
Peptide Calculator: Dosage Log started with a simple frustration: the math for reconstituting a vial is straightforward — until you do it at 6 a.m. on dose day, decimals start sliding, and the wrong answer could mean a 10× overdose. Existing apps were either generic medication trackers or clinical tools nobody could afford.
So we built the app we wanted: a calculator that always shows its work, a protocol engine that auto-advances week by week, an injection-site map that remembers, an Apple Watch app that lets you confirm a dose from the gym, and a doctor-ready PDF that fits on the back of a clipboard. Offline. No account. No data selling.
Principles we will not bend
On-device first
Your protocols and logs live on your device. No server holds your data.
No ads, ever
An ad in a medical-adjacent app is unconscionable. We won't do it.
No streaks
We will not gamify medication adherence. Reminders are tools, not slot machines.
Clear math
Every result shows concentration, volume, units, and warnings — never a black box.
Doctor-ready
Every record is exportable. The app gives you leverage in your provider's office.
Adults 18+
We only build for adults capable of weighing risk and verifying every dose.
If something is broken or unclear, write to contact@peptidecalculatorlog.com. The same person who wrote the calculator answers the email.