Last updated 1 November 2026

Privacy policy

PepCalc collects no personal data. Everything you enter stays on your device.

What PepCalc stores

Your vials, draws, custom peptides and blends, journal entries (weight, body measurements, blood sugar, side effects, notes, and progress photos), and display settings. They are stored only on your device: in your browser's storage, or in the Android app's private storage.

What PepCalc sends

Nothing you enter. There is no account, server, analytics, advertising, or third-party code. The web app loads its files from GitHub Pages and then works offline. When you're online, your browser occasionally checks for a newer version, and that check carries none of your data. The Android app has no network permission.

GitHub hosts these pages and may keep standard server logs, such as IP addresses, under GitHub's privacy statement. Those logs never include anything you enter in PepCalc.

Backups, reports, and shared images

A backup from Settings is a plain JSON file that goes wherever you save it. PepCalc never uploads it, and Android cloud backup is turned off for the app.

PDF reports, chart images, and draw cards are made on your device. They leave it only when you save or share them, and go only where you send them.

Deleting your data

Delete any vial, draw, or journal entry in the app. Uninstalling the app, or clearing this site's data in your browser, deletes everything. Without a backup, deleted data can't be recovered.

Age

You must be 18 or older to use PepCalc, or the age of majority where you live if that is higher. PepCalc collects no data from anyone.

Changes and contact

Changes to this policy will appear on this page with a new date. PepCalc's source code, including this page, is public at github.com/PepCalc under the GNU AGPL-3.0. For privacy questions, open an issue at github.com/PepCalc/app/issues.