# Pepti - Peptide Tracker > Privacy-first iOS peptide tracker. No account, no sign-up, no cloud sync. Reconstitution and draw-volume math, 8-zone injection site rotation, half-life reference curves, vial cost tracking. Explains, never prescribes: no dosing or protocol guidance on any page. ## Pages - [Home](https://getpepti.app/index.html): App overview and App Store download - [Peptide Reconstitution Calculator](https://getpepti.app/calculator.html): Interactive draw-volume and U-100 syringe unit calculator; measurement tool only, never suggests a dose - [How to Work Out What to Draw](https://getpepti.app/reconstitution.html): Plain-English guide to reconstitution math - [Injection Site Rotation Guide](https://getpepti.app/rotation.html): Why rotation matters and the zone system - [Tracking a Retatrutide Schedule](https://getpepti.app/retatrutide-tracking.html): Record-keeping for retatrutide users; no doses or titration amounts - [How to Track Peptide Cycles](https://getpepti.app/tracking-peptide-cycles.html): What to record; describes record-keeping only - [Retatrutide: Evidence & Half-Life](https://getpepti.app/retatrutide.html): Cited trial evidence and half-life reference; no dosing guidance - [Semaglutide: Evidence & Half-Life](https://getpepti.app/semaglutide.html): Cited trial evidence, half-life and persistence data; no dosing guidance - [Tirzepatide: Evidence & Half-Life](https://getpepti.app/tirzepatide.html): Cited trial evidence including the only head-to-head GLP-1-class comparison; no dosing guidance - [Hair Shedding on GLP-1s](https://getpepti.app/hair.html): Why shedding starts months in, what the 2026 meta-analyses and BMJ cohort report; no dosing or treatment guidance - [Peptide Tracker Apps Compared](https://getpepti.app/best-peptide-tracker-apps.html): Disclosed first-party comparison of ten trackers on price, privacy, features and dosing stance; verified September 2026 - [Pepti vs Regimen](https://getpepti.app/pepti-vs-regimen.html): Disclosed head-to-head comparison on price, privacy, platforms and dosing stance; verified September 2026 - [Pepti vs Dose Track](https://getpepti.app/pepti-vs-dose-track.html): Disclosed head-to-head comparison on price, data handling, database size and dosing stance; verified September 2026