MyPepTracker vs Stackr

MyPepTracker is the most complete peptide protocol companion for iOS. Log and track every aspect of your peptide, GLP-1, and supplement stack — from reconstitution math to half-life pharmacokinetics, body transformation photos, and automatic iCloud sync. Your data lives in your iCloud account and never touches a third-party server. DOSE LOGGING & VIALS • Log doses with injection site, volume, notes, and backdating • Color-coded vial gauge shows mcg remaining and doses left at your current dose size • Vial burn-rate tracking with depletion countdown • Injection site rotation — recommends your most-rested site based on history • Log Session: dose your entire stack at once in one sheet • Cycle analytics: doses per week, total mcg delivered, injection site breakdown HALF-LIFE & PHARMACOKINETICS • Estimated serum concentration curves over ±48 hours for 100+ compounds • Sparkline decay curves on every Today card • Symptom overlay — see when side effects peak relative to compound levels • Standalone symptom logging at any time, with clustering pattern insights GLP-1 TITRATION • Auto-advancing titration protocols for Semaglutide, Tirzepatide, and Retatrutide • Tracks current phase, dose, and weeks until next escalation • Pre-fills the dose log with your current titration dose automatically SUPPLEMENTS & BLENDS • Track supplements from an 800+ item preset library or as custom entries with any dose unit • Custom blends for pre-mixed vials (CJC/Ipamorelin, BPC-157+TB-500) with locked component ratios BODY & PROGRESS • Body metrics: weight, waist, neck, chest, back, biceps, thighs, and body fat % • Progress photos with front/side/back/custom categories and side-by-side before/after comparison • Apple Health — reads sleep, resting HR, and HRV for protocol correlation; writes weight and body fat EXPORT & DATA • Protocol Summary PDF — polished one-page overview for your provider or records • Full data CSV export: peptides, vials, doses, symptoms, and body measurements in one file • Import dose history from JSON or CSV • Home Screen widget shows your next scheduled dose at a glance ICLOUD SYNC • Syncs automatically to iCloud — delete and reinstall and your data comes back • Install on a second device signed into the same Apple ID and your data follows you • No account required — uses your existing iCloud login PRIVACY • All data lives in your iCloud account — Apple's infrastructure only • No analytics, no tracking, no ads 100+ compound presets across GLP-1s, growth peptides, BPC/TB, nootropics, and more — with half-life data sourced from published literature.

Stackr is the simplest way to track peptide and GLP-1 dosing. Log every dose. Track vials, pens, tablets, and other containers with how much you have left. Get reminders for your next dose. See how half-life shapes estimated active levels in your stack over time. Built for peptide enthusiasts, GLP-1 users, and anyone who wants their protocol off paper and into an app that understands supplies and dosing cadence — not a generic habit tracker. WHY STACKR • Fast dose logging — log from home or tap the widget when you're in a hurry • Supplies — track what's in the fridge (vials, pens, bottles, sprays, and more) with amounts, low-stock alerts, and typical dose size so "doses left" stays honest • Multi-peptide stacks — run BPC-157 alongside a GLP-1 (or anything else you track) in one place • Active levels — visualize estimated active amount over time from your logged doses and each peptide's half-life (educational estimate, not medical guidance) • Reminders & widgets — next-dose reminders that respect your schedule; home-screen widgets for what's due PEPTIDE LIBRARY Stackr includes reference pages for the most-tracked compounds — semaglutide, tirzepatide, retatrutide, BPC-157, TB-500, MK-677, GHK-Cu, and more. Each page covers typical dosing, half-life, schedule, route, mechanism, and general education. Educational only — Stackr is not medical advice. REMINDERS THAT FIT YOUR PROTOCOL Set reminders aligned with how you dose — daily, every other day, weekly, or custom intervals. Use widgets to see what's next without opening the app. SYNC ACROSS YOUR DEVICES Sign in with Apple or email and your data syncs across iPhone and iPad. Encrypted in transit. Your dosing history stays tied to your account — no ads, no selling data to third parties. BUILT FOR THE PEPTIDE COMMUNITY: By a peptide user, for peptide users. If something's missing, the in-app feedback channel goes straight to the founder. —— Disclaimer: Stackr is for personal tracking only and does not provide medical advice. Consult a qualified healthcare provider before starting or modifying any peptide or pharmaceutical protocol. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ SUBSCRIPTION Stackr is free to download. Full access requires Stackr+, a paid subscription. Estimated level charts, shot planning, home screen widgets, smart reminders, and export reports all require an active Stackr+ subscription and are not available without purchase. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel your subscription in your Apple Account settings.