Blood Levels
Half-life medication tracker
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Blood Levels tracks any medication using pharmacokinetic calculations — GLP-1s, testosterone, insulin, and more. Your data stays on your device.
Track medication blood levels with scientific precision — using pharmacokinetic half-life calculations that show you exactly how your medications rise and fall over time.
Blood Levels works with ANY medication that has a known half-life. Unlike apps built for a single drug class, it supports GLP-1 agonists, testosterone, estradiol, insulin, thyroid medications, biologics, pain medications — anything you need to track.
WHAT BLOOD LEVELS DOES
• Visualizes your blood level over time with a smooth decay curve
• Sums contributions from every past dose to show your current true level
• Suggests when to take your next dose based on your target minimum
• Works offline — all calculations run on your device
FEATURES
• 60+ pre-loaded medications with accurate half-life data
• Custom medications — add any drug with its half-life
• Smart dose logging with injection site tracking
• Beautiful charts with target-range shading
• Dose reminders and notifications
• Weight, height, blood pressure, heart rate, and blood sugar tracking
• Side effect logging with severity
• CSV import/export
• Full JSON backup and restore (Pro)
• PDF reports for your doctor (Pro)
• Apple Health two-way sync (Pro)
• Privacy Mode to hide selected medications on demand (Pro)
• iCloud sync (optional)
• Dark mode, AMOLED black theme, light mode
• Metric or Imperial units
21-DAY FREE TRIAL
All features are free for 21 days. Unlock forever with a single $4.99 purchase. No subscription. No auto-renewal. No recurring fees.
PRIVACY FIRST
No accounts. No tracking. No ads. No analytics SDKs. Your data lives on your device and, if you choose, your private iCloud. The developer never sees it.
MEDICAL DISCLAIMER
Blood Levels is an informational tool, not a medical device. The calculations are estimates based on standard pharmacokinetic formulas and published half-life data. Actual levels vary with individual metabolism, drug interactions, and other factors. Always consult your healthcare provider for medical decisions.
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Questions or feedback? humberto+bloodlevels@humberto.us
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's new in 1.3
• Pro owners no longer see the "trial ended" screen flash when opening the app
• Shotsy imports now bring in every shot, including days with more than one injection
• Importing the same CSV export twice no longer duplicates your doses or health data
• Changes from your other devices now appear through iCloud without restarting the app
• Charts update right away after you edit a dose or medication, and shaded areas line up correctly when you track several medications
• Blood pressure readings are now labelled with the correct category, including Stage 2 and Hypertensive Crisis
• Dose reminders stay accurate when you log, edit, or delete doses
• Opening a medication with a long dose history is much faster, plus many smaller fixes
The developer, Humberto Verdugo, 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
- Humberto Verdugo
- Size
- 3.5 MB
- Category
- Medical
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Alcohol, Tobacco, Drug Use or References
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Blood Levels Pro $4.99
- Copyright
- © 2026 Humberto Verdugo