Work out the exact volume to draw and the syringe units straight from your vial — no maths scribbled on a notepad, no second-guessing before an injection.
Never lose track of which injection site you used, or when — Pepti remembers your last one and shows you where to rotate to next.
See a compound’s half-life at a glance, and log your weight and bloodwork in the same place, so the trend over weeks is easy to read.
Keep an eye on what each vial is costing you and how many doses are left, so you reorder before one runs dry mid-week.
No account. No sign-up. No cloud sync. Your data stays on your device, apart from optional AI coach chats.
A paid, private tool — no free tier, no ads, no data selling.
Not medical advice. Pepti is a record-keeping and measurement tool, not a medical device.
What a peptide tracker does
A peptide tracker is the record behind an injectable routine: what you drew, when, into which site, and from which vial. The point of keeping it is that the record can answer questions later that memory cannot. On paper those details scatter — the draw-volume maths gets redone from memory, the rotation turns into guesswork, and a vial empties on the wrong day. A good peptide tracker holds the log, the arithmetic and the trend in one place, so each refers to the same history instead of three half-remembered versions of it.
Pepti is built for people drawing from compounded vials and research peptides rather than prefilled pens. It turns a vial and the water you added into a concentration, a volume to draw and syringe units; it remembers your last injection site and points you to the next in a twelve-site rotation; it counts the doses left in each vial and what they cost; and it charts a compound’s rise and fall between injections from values you enter. Your protocol stays on the device — no account, no sign-up, no cloud sync, apart from optional AI coach chats.
There is one line it never crosses: Pepti does not tell you what dose to take. You enter a figure you already have, and it does the arithmetic around it. Getting the measurement right is our job; the decision stays with you and whoever directs your care.
If you are weighing up which app to use, the full peptide tracker guide explains what to log, how reconstitution and U-100 units work as plain arithmetic, and how to choose a tracker that fits the way you dose — pens or vials, iOS or Android, on-device or account-based. It is the honest version of the pitch: if pens suit you better, or you are on Android, it says so and points you elsewhere.
