OnePin

A private tracker for peptide & supplement protocols.

Download on the App Store Open the Web App

OnePin helps you stay organized and consistent with your regimen. Log every dose, plan your reconstitution math, track your inventory and open vials, rotate injection sites, and see what is coming up - all in one place, kept private to your account and synced across your devices.

What you can do

Dose trackingLog doses with reminders, see today's schedule, and review your full history and compliance over time.

Protocols & cyclesBuild multi-phase protocols with on/off cycling, escalation, and per-day scheduling. See upcoming starts, breaks, and ends.

Inventory & vialsTrack stock, open-vial sessions, doses remaining, and beyond-use dates so you never get caught short.

Reconstitution calculatorConvert your vial contents, diluent, and target dose into the exact units to draw. You set the numbers - OnePin does the arithmetic.

Injection site mapLog and rotate injection sites with a visual body map and a heat view to avoid overusing the same spot.

Labs & insightsRecord biomarker results, see trends, and get rule-based plus AI-assisted insights from your own data.

Household modeTrack protocols for yourself plus a partner from one app, each with their own protocols, inventory, and history.

Private & portableYour data stays tied to your account, syncs across devices, and exports anytime as a full JSON backup or CSV.

Web and iPhone

OnePin runs as a web app in any browser and as a native iPhone app. Sign in with the same email on either and your data syncs across both.

Web: onepin.app
iPhone: App Store

Subscription

OnePin Premium unlocks the full feature set. New users get a free trial; see in-app pricing for your platform. Manage or cancel anytime from your App Store account (iOS) or from Settings (web).

OnePin is a tracking and education tool only. It is not medical advice, diagnosis, or treatment, and it does not recommend dosages. Compounds you track may be regulated as research chemicals or supplements depending on your jurisdiction. Always consult a qualified healthcare professional before starting, changing, or stopping any protocol. For adults only.