Halflife - Peptide & GLP-1 Log
Tracker & Syringe Calculator
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
We heard your feedback! Added the features you wanted, plus lots of QoL improvements. Light mode's next — contact@halflife-labs.com .
If tirzepatide, peptides, TRT, insulin, nootropics, and longevity compounds are part of the same protocol, fragmentation becomes the limiting factor.
Halflife unifies multi-compound protocols into a single system for dosing, pharmacokinetics, adherence, inventory, and real-world performance tracking.
Core System
Tracks complete protocol stacks across GLP-1 medications, recovery peptides, growth hormone secretagogues, testosterone replacement, insulin, nootropics, sexual health agents, and longevity compounds in one environment. Every compound is logged within a unified timeline with dose history, vial stock, and schedule position.
Concentration Curves
Uses published pharmacokinetic data from FDA labels and peer-reviewed research to model active compound levels over time. Each compound is displayed as a live curve showing time to peak, current activity as a percentage of peak, and clearance trajectory. Biological effect windows model downstream activity for short half-life peptides.
Today Screen
Central execution layer for all protocols. Shows due doses, week progression, remaining vial inventory, and one-tap logging. Injection site rotation tracked automatically. Integrated syringe calculator converts vial concentration and target dose into exact draw volume.
Protocol Tools
Synergy Matrix, Reconstitution calculator, Unit converter, Vial runway calculator, Adherence circle.
Compound Database
Medically cited library covering tirzepatide, semaglutide, BPC-157, TB-500, CJC-1295, ipamorelin, testosterone esters, insulin, nootropics, and longevity compounds.
Biometric Intelligence
Apple Health integration connects sleep, HRV, heart rate, and weight trends with dosing history.
Community System
Pods, Challenges, Daily polls, Community discovery.
Data Model
All data stored locally on device. Nothing transmitted externally.
45 substances across GLP-1s, peptides, GH secretagogues, TRT, insulin, nootropics, sexual health, and longevity stacks.
Free tier: two compounds, full logging, weight tracking, 4 free tools, Adherence Calculator, Community Access. Advanced unlocks unlimited protocols and full analytics.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://halflife-labs.com/privacy/
- This app hasn’t received enough ratings or reviews to display an overview.
After we got asked a lot, we added compounds such as caffeine and more, as well as a calendar now!
We also added retroactive dose logging, so you can bring your history with you.
Lots (and we mean a LOT) of QoL improvements.
A few bug fixes.
And more! If you have features you want, please contact us at contact@halflife-labs.com
The developer, Ziad Soliman, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ziad Soliman
- Size
- 61.9 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Halflife Premium $9.99
- Halflife Pro Annual $34.99
- Halflife Pro Annual $44.99
- Copyright
- © Ziad Soliman
