v1.3, requires Apple Shortcuts on iOS 12
Log Caffeine Intake and Monitor Blood Caffeine Levels Over Time
Caff Life is a simple, customizable Shortcut for logging your caffeine intake to the Apple Health app on your iPhone. It uses these log entries to estimate the level of caffeine in your bloodstream over time.
Why Caff Life?
Because caffeine has a half-life in your bloodstream. This means that if you drink a cup of coffee containing 100 mg of caffeine, 5–6 hours later, you have 50 mg in your system. 10–12 hours later, you have half this amount again, or about 25 mg. Caff Life uses this formula to perform a rolling calculation of your caffeine levels over time, which can help you understand what consumption patterns work best for you.
When you run it for the first time, Caff Life will ask to install a helper shortcut called CL Calc. Caff Life creates small files and folders in your iCloud Drive containing your customization information. All caffeine intake is logged directly to the Apple Health app.
To check which version you have, press ⋯. To update, delete both Caff Life and CL Calc, then download the latest version here. You’ll be prompted to re-install CL Calc when you run the updated Caff Life for the first time. All your settings and logged drinks will be preserved.
1.1 Name changed to Caff Life.
1.2 Fixed a bug with CL Calc introduced with the name change.
1.3 Fixed a bug where using the suggested time would fail and use noon instead.