MyPepTracker vs Stack

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.

Stack is the all-in-one tracker for peptides, GLP-1 medications, and TRT protocols. Log every injection, build custom dosing schedules, track your progress, and keep your full history organized in one private place. Built for adults working with a prescribing healthcare provider, Stack replaces scattered notes and spreadsheets with a simple, consistent system you control. You enter your own values (peptide name, dose, schedule, and sites) and Stack keeps them organized, reminds you, and shows your progress over time. FEATURES • Custom Protocols & Stacks — Build your own multi-peptide protocols with flexible schedules (daily, weekly, every X days, or custom). Run multiple stacks at once, each clearly organized. • Smart Dose Logging — Log every injection in seconds and see what's due today on your Home screen and calendar. A daily streak keeps you consistent. • Reconstitution Calculator — Take the guesswork out of mixing. Enter vial amount, diluent volume, and target dose to get the exact mL or insulin-syringe units to draw. • Vial & Refill Tracking — Set how much each vial holds, watch it deplete with every dose, and refill in one tap. A tap-to-flip ring shows the exact percentage remaining. • Injection Site Tracker — Rotate sites with an interactive body map that remembers your recent spots, so you can avoid reusing the same area. • Apple Health Sync — Pull in weight, BMI, resting heart rate, HRV, sleep, steps, active energy, blood pressure, respiratory rate, body fat, lean mass, and VO2 max to see the full picture. • Progress Photos & Compare — Capture progress photos and view them side by side with weight and date overlays. Hide weight for privacy, then share a branded comparison. • Meal Scan — Snap a photo of your meal to estimate macros and keep nutrition alongside your protocol. • AI Assistant — Ask questions about your active stacks and protocols in a private chat built into the app. • Metrics & Insights — Clean charts and stats show how your protocol is trending over time. • Home Screen Widget — See your next dose and stay on track without opening the app. • Shareable Protocol Card — Generate a clean, branded card of your active protocol to save or share. PRICING Stack requires a subscription to unlock the full experience. IMPORTANT Stack is a personal record-keeping and organization tool for informational purposes only. It does not provide medical advice, diagnosis, or treatment, and is not a substitute for professional care. Always consult a qualified healthcare provider before starting, changing, or stopping any medication or protocol. Terms of Use (EULA): https://www.whatsyourstack.app/terms.html Privacy Policy: https://www.whatsyourstack.app/privacy.html Questions or feedback? Email us at contact@whatsyourstack.app.