PepGem

Track GLP-1s & peptides

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

PepGem is the only iOS app that tracks GLP-1s and research peptides in one place — built for people who take their protocol seriously. TRACK EVERYTHING • Protocols with schedules, reminders and cycle dates — daily, every-other-day, 5-on/2-off and more • One-tap dose logging with injection-site rotation on a heat-mapped body map • Weight trends with BMI context, from day one NEVER RUN DRY • Vial inventory with live supply projections • A heads-up notification about a week before a vial runs out RECONSTITUTION, SOLVED • Enter vial size, water and your dose — see the exact draw on a live syringe • Over-capacity warnings, doses-per-vial and concentration at a glance KNOW YOUR STACK • A 52-peptide library in plain English: mechanisms, half-lives, side effects, storage • Curated starter stacks — Wolverine, GH, GLO, Sleep, Cognitive and more • A built-in advisor that answers from the verified library — and never plays doctor YOUR DATA STAYS YOURS • No account. No analytics. No ads. • Everything lives on your device and your own private iCloud PepGem is an educational tracking tool, not medical advice. It never recommends doses — especially for prescription medicines like Semaglutide, Tirzepatide or testosterone. Always consult a licensed clinician before starting, stopping or changing any protocol. PepGem Pro (optional subscription): unlimited protocols, supply alerts, the advisor, curated stacks, the full library, site rotation and calendar. $3.99/week or $27.99/year. Terms of Use: https://brandzn.com/pepgem/terms Privacy Policy: https://brandzn.com/pepgem/privacy

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New: a quarterly PepGem Pro plan — three months for about half the weekly rate. Pick whichever fits how you run.

Version 1.3

The developer, Brandon van Rijn, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Brandon van Rijn
    Size
    • 4.6 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 3 more
    • English, French, German, Spanish
    Age Rating
    18+
    • 18+
    • Learn More
    • Frequent
      Medical Treatment information
      Alcohol, Tobacco, Drug Use or References

      Contains
      Health or Wellness Topics
    In-App Purchases
    Yes
    • PepGem Pro — Quarterly $27.99
    • PepGem Pro — Weekly $3.99
    • PepGem Pro — Annual $27.99
    • Learn More
    Copyright
    • © 2026 Brandon van Rijn
  • Developer Website
  • Privacy Policy

    • More by Brandon van Rijn