Best Peptide Tracker Apps in 2026 (Tested + Compared)

The best peptide tracker depends on your stack complexity. Single-compound users get real value from any tracker on this list; multi-compound stackers need apps that handle reconstitution math, site rotation, and inventory. Here are 10 trackers compared honestly.

This comparison covers every dedicated peptide tracking app we've tested or researched as of April 2026 — including ourselves, listed last. We're not ranking these; we're describing what each one does and who it's for. If you're looking for the short answer, jump to the decision matrix at the bottom.

Comparison at a glance

Pricing and features change. Verify on each app's current listing or website.

1. PepTracker: Dose Log

Platforms: iOS · App Store rating: 4.7★ (309 reviews)

PepTracker: Dose Log is the most-reviewed dedicated peptide tracker on iOS and, by that measure, the most battle-tested. It covers multi-compound logging across peptides, GLP-1s, and TRT/HRT — a broader scope than most competitors. Site rotation tracking is built in. The UI is iOS-native, which means it feels fast and integrates with iPhone health behaviors (notifications, lock screen glance).

What's missing: No AI coaching layer. Reconstitution math is limited — you can track doses but may need to calculate draw units outside the app. No web access if you're also working on a laptop. No Android.

Best for: iPhone users who want the most established iOS tracker with multi-compound depth and don't need reconstitution calculator integration or web access.

2. PeptideKit

Platforms: iOS · App Store rating: 4.7★ (200 reviews)

PeptideKit leans into protocol scheduling — it's built around helping you stay on your dosing cadence with reminders and schedule management. The AI assistant feature is a differentiator: it can answer compound questions within the app, which bridges the gap between a tracker and an educational tool. Reconstitution calculation is included.

What's missing: Site rotation is not a listed feature. The AI assistant is not personalized to your specific logged data — it's closer to a built-in compound FAQ than a protocol coach. iOS only. No Android, no web.

Best for: iPhone users who want strong scheduling and reminders, basic AI compound Q&A, and don't need site rotation tracking or a multi-device workflow.

3. Peptide Tracker & Calculator

Platforms: iOS · App Store rating: 4.7★ (202 reviews)

A solid all-in-one iOS app that combines reconstitution calculation with dose logging in one interface. The free tier covers meaningful functionality, making it accessible for users who want to try before committing to a subscription. Multi-compound tracking is supported. The "all-in-one" positioning means it tries to handle calculation and tracking without sending you elsewhere.

What's missing: Site rotation is partial — there may be an injection site log but not a full rotation sequence management system. No AI coaching. iOS only. No web access.

Best for: iPhone users who want the calculator and tracker in one native app, without a subscription commitment to start.

4. PepTracker.app

Platforms: Web · Website: peptracker.app

PepTracker.app is web-first, which gives it cross-device access from day one — you log on your phone via browser, review on your laptop. It handles multi-compound tracking and includes reconstitution math. The web-first approach means no App Store delay for updates and no iOS/Android split.

What's missing: No AI coaching. Site rotation tracking is not prominently featured. No free tier — it's a paid subscription from day one. As a web app it lacks push notifications without PWA setup.

Best for: Users who want a web-first tracker with multi-compound support and reconstitution math, and are willing to pay upfront without a free tier.

5. PeptIQ

Platforms: iOS, Android, Web · Website: peptiq.io

PeptIQ takes a wellness-tracking approach rather than a pure dose-logging focus. The body map feature is a standout: you can mark injection sites visually on a body diagram, which makes rotation intuitive for people who think spatially. Cross-platform — iOS, Android, and web — means it serves the widest device footprint of any tracker on this list.

What's missing: Reconstitution math is partial. No AI coaching. The wellness-tracking angle means it's broader but potentially shallower on the specific calculation depth that peptide protocols require. Feature parity across platforms should be verified — cross-platform apps sometimes lag one platform.

Best for: Multi-device users who want iOS + Android + web, value visual body-map site rotation, and can live with lighter reconstitution calculator depth.

6. Smart Peptide Tracker

Platforms: Android · Google Play rating: 4.8★ (55 reviews)

Smart Peptide Tracker is notable for two things: the highest per-review rating of any app on this list (4.8★), and a one-time purchase model with no ongoing subscription. For Android users who want to pay once and be done, this is the only dedicated option. Multi-compound logging and site rotation are supported.

What's missing: Android only — no iOS, no web. Reconstitution calculator is not listed as a feature. Review count is lower than iOS competitors (55 vs. 200–300 range), though the rating is excellent. No AI coaching.

Best for: Android users who want to pay once for a capable tracker with site rotation, without a subscription.

7. Peptide Pro App

Platforms: Web · Website: peptidepro.app

Peptide Pro App is a web-based tracker with multi-compound support and reconstitution calculator integration. The web-first approach allows cross-device use without App Store dependency. It targets the more serious protocol user with depth in tracking customization.

What's missing: Site rotation is not prominently featured. No AI coaching. Limited free tier — verify current pricing before committing. Smaller review footprint than the iOS leaders.

Best for: Web-first users who want multi-compound tracking with reconstitution math and are comfortable with a subscription model.

8. SHOTLOG

Platforms: iOS, Web

SHOTLOG focuses specifically on dose math and titration — it's built for users who care most about getting the draw calculation right and tracking their escalation precisely. The titration focus makes it particularly relevant for GLP-1 users managing weekly dose changes. Cross-access via iOS and web.

What's missing: Site rotation is not a listed feature. No AI coaching. The titration-centric focus means it's narrower than full-protocol trackers for multi-compound biohackers. Verify current availability and pricing.

Best for: GLP-1 users who are actively escalating doses and need precise draw-unit tracking through each escalation step.

9. The Pep Planner

Platforms: Web (cross-device)

The Pep Planner emphasizes washout tracking and cross-device sync — two features that matter specifically for people who run compounds in cycles (run, washout, restart) and switch between devices. A free tier is available. The washout focus is unusual and genuinely useful for understanding when a compound has cleared before starting a new cycle.

What's missing: No reconstitution calculator. No AI coaching. Smaller review footprint makes quality harder to assess. As a web app, it competes with PepTracker.app and Peptide Pro for the same cross-device slot.

Best for: Protocol users who run defined cycles with washouts, need cross-device access, and don't require built-in reconstitution math.

10. My Pep Calc

Platforms: Web (PWA — installable on iOS and Android) · Website: mypepcalc.com

We're listing ourselves last because a comparison article that leads with its own product is credibility-destroying. Judge us by the same criteria as the rest.

My Pep Calc is web-first with PWA install support — it installs to your home screen on iOS and Android without going through the App Store, and works offline for the reconstitution calculator. Multi-compound tracking, reconstitution math, injection site rotation, inventory burn rate, and AI Coach with access to your actual protocol data are all included.

The AI Coach is the clearest differentiator: it's not a generic compound FAQ — it has access to your logged doses, your compounds, your schedule, and your history. If you ask "have I been consistent with my BPC-157 timing this month?" it can actually answer that from your data, not from a generic answer.

The honest comparison, head to head: if you're a Marcus-style biohacker running 3+ compounds and want the multi-compound depth, the calculator integration, and an AI Coach with real protocol context — My Pep Calc or PepTracker: Dose Log are the two strongest options today. Pick My Pep Calc for calculation depth, AI Coach, and web-first flexibility. Pick PepTracker: Dose Log for the proven iOS-native experience with 309 reviews.

What we don't have (yet):No native iOS or Android app — it's PWA only (installable, but not from the App Store). If you specifically want an App Store install with native push notifications, PepTracker: Dose Log, PeptideKit, or Peptide Tracker & Calculator are ahead of us there.

Pricing: Free tier (up to 2 compounds, full history, recon calc). Pro from $9.99/mo. Lifetime deal at $149.

For more on why AI chat tools like Claude and ChatGPT are complementary but not substitutes, see our AI artifact vs. dedicated tracker comparison.

Decision matrix: which tracker to choose

• New to peptides, want to start simple:Peptide Tracker & Calculator (iOS, free tier) or My Pep Calc free tier (web, any device).
• Running a multi-compound stack: My Pep Calc or PepTracker: Dose Log. Both handle the complexity; pick based on whether you prefer web-first or iOS-native.
• Android user: Smart Peptide Tracker (one-time purchase) or PeptIQ (iOS + Android + web). Android-native options are thinner than iOS.
• Managing GLP-1 dose escalation: SHOTLOG for titration depth, or My Pep Calc for combined escalation tracking + reconstitution math.
• Running compounds in cycles with washouts: The Pep Planner (washout focus) or My Pep Calc (washout visible on half-life timeline).
• Want iOS-native with the most reviews: PepTracker: Dose Log (309 reviews, 4.7★) is the clear leader by review volume.
• Need web + mobile without picking a platform: My Pep Calc or PeptIQ (both work across devices).

How we compiled this list

We searched the iOS App Store, Google Play, and the web using "peptide tracker," "peptide dose log," and "peptide calculator app" query variants. We included every dedicated peptide tracking app we could find with an active listing as of April 2026. We excluded general health logging apps (Apple Health, Cronometer) that can technically log injections but aren't purpose-built for peptide protocols.

Feature descriptions are based on public App Store listings, website descriptions, and where possible, hands-on testing. Ratings and review counts reflect App Store and Google Play data as of April 2026 — these change over time.

For more on multi-compound tracking complexity, see why multi-compound protocol tracking is geometrically harder. For reconstitution math reference, use the reconstitution calculator.

This article was reviewed by the Protocol Editor.