Stackr - Peptide Tracker

Stackr is a peptide and GLP-1 tracking app for logging doses, monitoring supplies, managing multi-peptide stacks, and staying on schedule. Track vials, pens, tablets, bottles, sprays, and other containers with remaining amounts, low-stock alerts, and estimated doses left.

Set daily, weekly, every-other-day, or custom reminders, and use home-screen widgets to see upcoming doses quickly. Stackr also visualizes estimated active levels based on logged doses and peptide half-lives, with educational reference pages for compounds including semaglutide, tirzepatide, retatrutide, BPC-157, TB-500, MK-677, and GHK-Cu.

Data syncs across iPhone and iPad through Sign in with Apple or email. The app includes no ads, encrypts data in transit, and offers dose history, planning, widgets, smart reminders, and export reports through the paid Stackr+ subscription. Stackr is intended for personal tracking and educational purposes only, not medical advice.