The minimum viable injection record
- Compound and formulation exactly as labeled.
- Dose amount and unit, without silently converting mg, mcg, IU, mL, or syringe units.
- Date, time, route, and injection site.
- Vial or supply record tied to the logged dose.
- Scheduled, completed, skipped, or delayed status.
- Optional symptoms and notes for later review.
What Halflife adds
The current official listing describes a unified protocol timeline, vial stock, schedule position, injection-site rotation, syringe calculation, Apple Health integration, PDF export, and estimated remaining-level curves. The listing says the app is only for iPhone and requires iOS 15.1 or later.
Source: Halflife’s current Apple App Store listing, checked June 11, 2026.
What a tracker cannot know
A timestamped injection record is known if it was entered accurately. An individual concentration derived from that record is not known; it is an estimate. A side effect logged after a dose is an observation, not proof that the dose caused it.
Use the right tool for each job
Use the injection-site rotation tracker for a quick browser-based site history, the reconstitution calculator for unit math, and the Halflife app when you need an ongoing protocol record.
Frequently asked questions
What should a peptide injection tracker include?
It should include compound, dose, unit, date, time, route, injection site, vial or supply record, schedule status, and optional symptoms or notes.
Is an injection tracker a substitute for medical records?
No. It is a personal organization tool and does not replace clinical records, professional advice, or appropriate monitoring.
Keep the complete record in one place
Halflife - Peptide & GLP-1 Log organizes injection logs, schedules, vial inventory, sites, symptoms, and clearly labeled estimates on iPhone.
Download Halflife - Peptide & GLP-1 Log