Caff: Caffeine & Sleep Tracker
Limit, burndown, last call
Only for iPhone
$0.99 · Designed for iPhone. Not verified for macOS.
iPhone
New: 5 home screen widgets including burndown chart & sleep forecast. No account, no cloud! Your data stays on your device and in Apple Health.
Know exactly how much caffeine is in your system. Right now, and at bedtime.
Caff tracks your caffeine intake and models how it decays in your body using a scientifically-based half-life formula. Log a coffee in seconds, then watch the burndown chart show you your caffeine curve for the next 12 hours.
SLEEP SMARTER
Set your bedtime once. Caff calculates how much caffeine will still be in your system when you try to sleep, estimates how many minutes of sleep you'll lose, and shows you a "Last Call" time, the latest you can safely drink caffeine tonight.
TRACK YOUR INTAKE
• Preset drinks: coffee, espresso, tea, energy drinks and more
• Create custom drinks with a name, emoji, and mg amount
• Personal daily caffeine limit with a live progress bar
• Full history grouped by day, swipe to delete
5 HOME SCREEN WIDGETS
Summary · Burndown chart · Sleep forecast · Today's log · Weekly chart, all updating live from a shared data container.
APPLE HEALTH
Every entry is written to Apple Health as dietary caffeine. Delete an entry in Caff and the Health sample is removed too. No reads, your Health data stays private.
100% PRIVATE
No account. No cloud. No data collection. Everything lives on your device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Lennard Sommer, 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
- Lennard Sommer
- Size
- 1.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.6 or later.
- iPhone
Requires iOS 18.6 or later. - Mac
Requires macOS 15.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.6 or later.
- iPhone
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © Lennard Sommer
