Tracker reference

Peptide Injection Tracker: Log Every Dose, Site, and Cycle

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What does a peptide injection tracker log?

A peptide injection tracker records each shot's details: peptide name, dose in mg or mcg, draw volume in syringe units, injection site, time, and notes. Good trackers also handle site rotation reminders, schedule notifications for repeated cycles (once-weekly Semaglutide, daily BPC-157, etc), and export to CSV for sharing. Peptly stores everything on-device with no accounts, no servers, and no third-party tracking.

Why a dedicated tracker beats a spreadsheet

A peptide protocol has more moving parts than most apps assume. You're juggling: which vial you reconstituted with how much bacteriostatic water, what concentration that gives you, what dose your protocol calls for today, which titration step you're on, where you injected last week, and when the next shot is due. A spreadsheet captures the data but doesn't compute the math, remind you to rotate sites, or fire a notification on schedule.

Peptly's tracker is designed for the full loop — calculate the draw, log the shot, get reminded next week. The log is yours alone (on-device only) and exports as CSV when you need a copy.

What the tracker does

  • Per-shot log. Every injection — peptide name, dose in mg or mcg, draw volume, syringe units, time, site, and notes. Stored on-device. Nothing leaves your phone.

  • Site rotation reminders. Peptly tracks which injection site you used last and prompts you to alternate. Reduces local tissue stress and lipohypertrophy risk on the next dose.

  • Saved protocols. Define a protocol once — peptide, vial mass, BAC water, target dose — and the app reloads it in one tap. No re-deriving math every shot.

  • Schedule reminders. Once-weekly GLP-1 schedules, twice-daily growth-hormone-secretagogue schedules, and custom cycles all fire a notification at the time you set.

  • CSV export. Tap export to email or AirDrop a CSV of your log. Useful for sharing a research period with a clinician or another researcher.

  • On-device privacy. No accounts. No servers. No third-party tracking. Your injection log never leaves the device unless you explicitly export it.

Common protocols supported

  • GLP-1 weekly (Semaglutide, Tirzepatide, Retatrutide). Once-weekly schedule with titration step tracking. See the GLP-1 dose calculator for the math.
  • BPC-157 — common research protocols log 1-3 doses per day for 4-8 weeks. Site rotation matters because injections are typically near a target tissue region.
  • TB-500 — once or twice weekly for 4-6 weeks, then a maintenance cadence. The tracker captures the cycle phase.
  • Ipamorelin / CJC-1295 — typically 2-3 doses per day. Reminder cadence at a specific clock time fits the GH-secretagogue pulse profile.
  • Tesamorelin, GHK-Cu, AOD-9604, MOTS-c, NAD+, GHRP-2/6 — each gets a dedicated profile so the math reloads without retyping. The log captures cycle-level patterns over weeks.

Site rotation, briefly

Common research injection sites for subcutaneous peptides: four abdomen quadrants (avoid 2 inches around the navel), upper thigh outer, deltoid posterior, and gluteal upper outer. Rotating week to week reduces local tissue stress. Peptly's tracker remembers your last site and suggests a different one for the next shot. You can override any time.

How a tracked log helps the math next time

The most under-appreciated benefit of a tracker is what it does on shot #2 of a vial. The first time you reconstitute a peptide, you do the math — vial mass, BAC water, concentration, dose, draw volume. The tracker saves that as a "mix" — so the next dose from the same vial is one tap. No re-derivation. No "did I mark this as 5 mg or 10 mg" guess.

Over a multi-week protocol, this saves dozens of math derivations and rules out a category of mistakes (mcg/mg confusion, BAC-water typos, syringe-unit mis-reads).

On-device privacy in practice

  • No accounts. No login. No sign-up.
  • No analytics on log contents. Peptly's analytics (Firebase + AppsFlyer) track app events like "calculation performed" — never the peptide name, dose, or site.
  • No third-party syncing. The log lives in Peptly's SwiftData store on your iPhone. If you delete the app, the log is gone.
  • You control export. CSV export is a deliberate action — tap, choose a destination, send.

See also

Frequently asked questions

Why do I need to rotate injection sites? +

Repeated injections in the same site can cause local tissue stress — lipohypertrophy (fat tissue thickening), scar tissue, and altered absorption. Rotating sites week to week is a standard injection-hygiene practice. Peptly's tracker remembers your last site and prompts a different one on the next shot.

What information should I log for each peptide injection? +

A complete log entry has: peptide name, dose (mg or mcg), draw volume (in syringe units), injection site, timestamp, and any notes (side effects, timing, etc). Peptly captures all of these in one screen and reloads the active protocol so you don't retype the math.

Can I track multiple peptides at once? +

Yes. Peptly supports parallel protocols — for example, a weekly Semaglutide schedule plus a daily BPC-157 schedule plus an occasional TB-500 cycle — all in the same log with separate reminders.

Where is my injection log stored? +

On your device. Peptly uses SwiftData (Apple's on-device persistence) and never uploads your log. There are no accounts, no servers, and no third-party tracking. If you uninstall the app, the log is deleted. Export to CSV before uninstalling if you want a backup.

Can I export my log to share with a clinician or research collaborator? +

Yes. The tracker has a one-tap CSV export. You can email it, AirDrop it, or save it to Files. The export includes every log field — peptide, dose, draw volume, site, timestamp, and notes.

How are reminders scheduled? +

When you save a protocol, you set its cadence — weekly, twice-weekly, daily, or a custom interval. Peptly schedules a local notification at the time you specify. Notifications are local (no push servers), so they work offline and don't require an account.

Does Peptly track GLP-1 specific patterns like Wegovy titration? +

Yes. When you log a Semaglutide dose, the tracker captures which titration step you're on (0.25 mg → 0.5 mg → 1.0 mg → 1.7 mg → 2.4 mg for Wegovy). The same applies to Tirzepatide's Mounjaro / Zepbound schedule. See the GLP-1 dose calculator for the full schedule.

Is the tracker free, or part of Peptly Pro? +

The reconstitution calculator is free and unlimited. The injection tracker, dose log, schedules, and site-rotation reminders are part of Peptly Pro ($4.99/month or $29.99/year, with a 3-day trial on yearly). Lifetime access is also available at $49.99.

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