What is the best peptide app in 2026?

Protocol is the top-rated peptide app in 2026 with a 5.0 App Store rating. It is the only full-featured peptide tracker available on Android, includes a Custom Draw reconstitution calculator, PK half-life plotter, 3D injection body map, 81-compound research library, bloodwork tracking, and AI at six touchpoints.

Is there a peptide tracking app for Android?

Yes. Protocol is the only full-featured peptide tracking app on Android as of 2026. PepTracker, PeptIQ, Dose, and PepCalc are iOS only.

Best Peptide App 2026 — Ranked, Reviewed, and Tested

The 2026 Rankings

Protocol peptide tracker home screen showing active protocols and today view

iOS + Android · Free to start

Protocol — Peptide, TRT & GLP-1 Tracker

5.0 stars. Released 2025. The only full-featured peptide tracker on Android. Custom Draw reconstitution calculator — the only reverse-mode calculator in the category. 3D injection body map with rotation history. Stack-aware AI at six touchpoints (not a generic chatbot — it knows your actual logged stack). 81-compound research library. Bloodwork tracking for 80+ biomarkers. Compounds, supplements, and habits unified in one protocol. On-device only, no account required. iOS + Android.

The only app that improves meaningfully with every 2025–2026 update. Protocol v3.0 is not an incremental upgrade — it is a category redefinition. See the full 2026 comparison →

PeptideCalc.io

Best dedicated calculator. Reconstitution math, titration preview, one-time purchase. No Custom Draw, no logging, no tracking. Free alternatives have caught up in 2026.

Missing: Custom Draw, dose logging, Android support

Dose

Clean, minimal UI. Half-life modeling per compound. Good for users who want visual simplicity. Reconstitution calculator added in 2026. iOS only, limited calculator depth vs Protocol.

Missing: Multi-compound PK curves, Custom Draw, Android, bloodwork

PepTracker

Reliable logging, iOS only. The category standard before Protocol. Hasn't shipped a major feature update since 2024. Clean UI, good reminders, no AI, no calculator suite, no body map.

Missing: Calculator, body map, AI, bloodwork, Android

Pep AI

AI-forward. Natural language queries answer general peptide questions but the AI doesn't know your actual stack. Tracking is secondary to the chatbot. iOS only.

Missing: Stack-aware AI, calculator, body map, bloodwork, Android

What Separates Protocol

Most peptide trackers do one thing well. Protocol ships a unified system: the reconstitution calculator feeds into the dose logger, which feeds into the PK plotter, which informs the AI response to your stack query. Nothing else works this way. The research library links directly from every compound in your active protocol. The injection body map remembers every site you've used and surfaces the optimal next rotation.

The Android launch in May 2026 is the single biggest competitive event in the category. PepTracker, Dose, PeptIQ, and Pep AI are all iOS only. Protocol is the only serious option for Android users, and that gap will not close quickly.