Peptide Tracker vs Peptra

Stack is a self-tracking research log for adults running peptide protocols. Log every dose, see your schedule at a glance, and understand how your protocol lines up with what your body is actually doing. PROTOCOLS, DONE PROPERLY • Log doses in two taps, with schedules, titration steps, and cycle timelines • Curated Protocol Sheets — ready-made stacks with timelines, cautions, and one-tap clone • Active Supply tracking — see exactly how many mg remain in your vial and when to reconstitute • Reconstitution calculator and vial stability tracking WHERE YOUR PROTOCOL MEETS YOUR DATA • Apple Health integration: activity rings, workouts, heart rate zones, sleep, HRV • Cycle signals — see how recovery metrics trend across your protocol phases • Bloodwork: photograph a lab report and Stack structures every biomarker, with reference ranges and multi-report trend lines THE WHOLE PICTURE • Training log with strength scoring and Apple Watch auto-import • Nutrition tracking with AI meal-photo macro estimates and peptide-aware suggestions • A community feed to share results and templates with people running similar protocols • Full data export — your log is yours, in CSV or JSON A 44-peptide reference library provides plain-English educational summaries of published research, with cautions and interactions. IMPORTANT Stack is a tracking and educational tool for adults 18+. It does not provide medical advice, diagnosis, or treatment, and does not sell or source any compound. Anything you choose to track, you obtain and use at your own risk — always consult a licensed physician before starting, changing, or stopping any protocol.

Track peptides and GLP-1 doses in one place — free to try, no paywall before you've logged your first dose. Peptra is the record-keeping app for anyone managing an injection routine — GLP-1 medications, research peptides, or both. No spreadsheets, no guessing, no losing your history. COMPOUND LIBRARY Preloaded reference data for common GLP-1 medications (semaglutide, tirzepatide, retatrutide, liraglutide) and dozens of commonly discussed peptides (BPC-157, TB-500, CJC-1295, ipamorelin, and more), with educational summaries and typical units. Or add any custom compound with your own name, units, and notes. Start a protocol without typing in pharmacology data yourself. PROTOCOLS & SCHEDULING Daily, every-N-days, specific weekdays, weekly, twice-weekly, 5-on/2-off, or a fully custom pattern. Set up cycles with weeks-on/weeks-off, or a stepped ramp with reminders that follow each step. Run multiple protocols at once, each with its own schedule. DOSE LOGGING, YOUR WAY Log a dose in one tap, or log it hours or days later — backdating is fully supported. Every entry is editable and deletable after the fact, and your vial inventory recalculates automatically whenever you correct a log. Nothing is locked in. BLENDS DONE RIGHT If you draw from one vial with multiple peptides mixed together, Peptra logs it as a single injection while tracking the per-ingredient math behind the scenes — no forcing you to log the same shot three times. CONCENTRATION CONVERTER Enter how much is in the vial and how much liquid you added, and Peptra converts it to units on your syringe, with a live illustration and a warning if you are over capacity. Save the result straight into a vial record. This is unit arithmetic on numbers you enter — Peptra never suggests what to take or how much. VIAL INVENTORY Track fill amount, concentration, remaining volume, and expiry for every vial, with a run-out alert before you'd come up short based on your actual schedule. MEDICATION LEVEL INSIGHTS For compounds with published half-life data, see an estimated level curve — how much is still active in your system between doses. REMINDERS THAT WORK OFFLINE Local notifications tell you what's due and let you log directly from the notification. No internet connection required. BUILT ON TRUST Your data commits to your device the instant you log it, so a bad connection never costs you a dose record. What you log stays on your device — no account, no servers holding your health data, no ads, and no tracking across apps or websites. If you subscribe, our payments provider processes your purchase history and an anonymous identifier so your subscription restores across your devices; it is never joined to anything you log. FREE, HONESTLY Unlimited dose logging, one active protocol, reminders, the concentration converter, two vials, and the site map are free forever. Premium unlocks unlimited protocols and vials, blends, and level-curve insights — with a free trial and a real free tier underneath it, not a paywall wearing a demo's clothes. Peptra is a personal record-keeping and education tool. It does not provide dosing advice, titration recommendations, or medical guidance, and it does not link to or facilitate purchasing of any compound. Always consult a licensed healthcare provider for medical decisions. Terms of Use (EULA): https://peptra-7km.pages.dev/terms Privacy Policy: https://peptra-7km.pages.dev/privacy Questions or something broken? We read and answer support email within 48 hours.