Someone running a peptide protocol is, on any given week, holding a surprising amount of detail in their head. Which peptide. What dose, in micrograms. Which day. Which injection site. How much is left in the vial, when it was reconstituted, and what two weeks in the fridge have done to it since.
That is exactly the kind of information memory is worst at — small, numeric, repetitive, and smeared across weeks. Hold it all in your head and you will, eventually, get something wrong. A peptide tracker exists so you don't have to.
A fast-moving, badly documented corner
Peptides have had a loud couple of years. GLP-1 drugs like semaglutide pulled the whole category into ordinary conversation, and behind them a long tail of compounds — BPC-157, TB-500, ipamorelin, GHK-Cu — moved from niche forums into ordinary gym chat.
A fair amount of the enthusiasm is ahead of the science. One recent overview put it plainly: the hype is outrunning the evidence. That is not an argument for or against any of it. It is an argument for keeping a clear record. When the published evidence is still thin, the only data that genuinely describes you is your own — what you took, when, and what changed afterwards. A warm memory of "I think the BPC-157 helped my elbow" is not data. A dated log is.
What's actually worth logging
The Peptide Tracker is built around a single action: you log a dose. The peptide, the amount in micrograms, the time of day. That one small habit quietly produces everything else worth having.
- Adherence. Whether you actually ran the protocol you meant to run, or quietly skipped a third of it without noticing.
- Vials and reconstitution. When a vial was opened, what it was mixed to, and how many days it has been sitting in the fridge.
- Dose maths. The conversion from a concentration to units on a syringe, worked out once and recorded, rather than redone half-asleep at six in the morning.
- Injection sites. A simple rotation, so you are not hitting the same spot for a fortnight.
- Effects, and the absence of them. The sleep that did or didn't shift. The joint that did or didn't settle.
None of that is dramatic. It is just the difference between running a protocol and guessing at one.
Why this one stays on your device
There is a specific reason a peptide log should not live on someone else's server. A list of the compounds you are running, the doses, and the dates, tied to your name and email, is about as sensitive as a personal record gets. It is a health record without any of the protections a real health record is meant to carry.
The Peptide Tracker is a single HTML file. It opens in any browser, it works with the wifi off, and the protocol you type into it stays on the device you typed it on. No account to create, no company to be acquired, no privacy policy to quietly revise. If you stop using it, nothing of yours is left behind on a server, because nothing of yours was ever put on one.
When the evidence is still catching up, the only record that truly describes you is the one you kept yourself.
What it deliberately won't do
One thing the tracker does not do: it won't tell you what to take, or whether to take anything at all. There is no protocol library, no chatbot talking you into another compound, no nudge to extend the stack. It logs what you decide to log. The judgement stays with you and, sensibly, with your doctor.
That restraint is the point. A tracker that editorialises becomes a tracker you slowly stop trusting. This one keeps quiet and keeps your receipts.
Peptides may settle into mainstream medicine, or the current wave may recede — opinions differ, and 2026 will not be the year it is settled. Either way, the people running a protocol now will be glad, later, to have written it down. In a field moving this fast, the clearest thing you can own is an honest record of your own.
OneFileClub makes powerful one-file tools for keeping your own receipts — including a private peptide tracker for doses, vials and protocols. One file. One payment. Your data stays on your device, not in the cloud.