Peptide Ledger vs Stack

Track your GLP-1 and peptide research without spreadsheets, scattered notes, or another monthly subscription. Peptide Ledger brings protocols, dose history, vial inventory, reminders, progress, labs, observations, and research context together in one private ledger. EVERYTHING IN ONE PLACE • Create and track custom protocols • Log doses, observations, check-ins, and milestones • Track open and sealed vials, lots, concentration, cost, and expiration • See projected runout and reorder timing • Review doses, protocol changes, inventory events, progress, and labs in Timeline • Import body weight from Apple Health when enabled • Use reminders, widgets, and supported Siri actions RECONSTITUTION TOOLS Use your own entered values to calculate concentration, draw volume, and vial-mix references with a clear Reconstitution Solver. The app does not recommend doses or mixing amounts. PRIVATE BY DESIGN • No account required • Data stored locally by default • Optional private iCloud backup and sync • Face ID, Touch ID, or passcode App Lock • No advertising trackers START FREE Explore the Research Library, Now view, reminders, Reconstitution Solver, and core tracking tools before deciding whether you need Pro. PEPTIDE LEDGER PRO Pro is a one-time purchase with no recurring subscription. It unlocks higher tracking limits, unlimited inventory and history, forecasting, progress and lab tools, Vendor Book, advanced insights, widgets, and supported Siri actions. Peptide Ledger is intended for research tracking, reference organization, and personal recordkeeping. It does not provide medical advice, diagnosis, treatment, prescribing, dosing recommendations, or clinical decision support.

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.