Caffeine Health
- Redesigned Analytics: a dashboard coloured per range with rolling numbers, caffeine by source as one bar, and an hour-by-hour "When you drink" chart
- Search that forgives typos
- Log the 2nd or 3rd+ steep of a tea
- Redesigned, resizable widgets
- Frosted glass toolbar (Settings > Appearance)
- Updated translations
Log drinks from a curated catalog, watch your active caffeine level in real time on a 24-hour curve, and get a personalized sleep forecast based on your unique metabolism.
Features:
• Real-time 24-hour caffeine curve with emoji drink markers
• Personalized pharmacokinetic modeling based on age, weight, lifestyle
• Sleep forecast — see if caffeine will affect your bedtime
• Curated drink catalog: coffee, tea, energy drinks, soda
• Barcode scanning, live or from a photo, with an optional Open Food Facts lookup
• Typo-tolerant drink search and tea re-steep tracking
• Drink detail sheets showing individual contribution curves
• Quick actions — edit, duplicate, or delete entries
• Analytics: caffeine by source, bedtime impact, and when you drink it, hour by hour
• Home screen widgets, reminders, and automation via Tasker, MacroDroid or NFC tags
• Material 3 Expressive design with dynamic color
• Montserrat typography and haptic feedback throughout
• Full dark mode support
Privacy:
• Works fully offline — all your data stays on your device
• The internet is only used if you choose to look up a scanned barcode on Open Food Facts, and only the barcode number is sent
• No ads, no tracking, no telemetry, no accounts
• Open source (GPL-3.0)
Science:
The app uses a one-compartment oral pharmacokinetic model with personalized half-life calculation. Your caffeine metabolism is estimated from age, weight, smoking status, alcohol intake, and CYP1A2-inhibiting medications — grounded in real pharmacology.
- License: GNU General Public License v3.0 only
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Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
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arm64-v8aarmeabi-v7ax86x86_64This version requires Android 12 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Download APK 15 MiB PGP Signature | Build Log
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arm64-v8aarmeabi-v7ax86x86_64This version requires Android 12 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Download APK 14 MiB PGP Signature | Build Log
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arm64-v8aarmeabi-v7ax86x86_64This version requires Android 12 or newer.
It is built and signed by the original developer, and guaranteed to correspond to this source tarball.
Download APK 14 MiB PGP Signature | Build Log
• Includes everything from 2.4.0:
• Quick start times when adding a drink: Now, 10 min, 30 min or 1 h ago; editing the time opens on the clock first (#48)
• Set your own "Time to finish": a default, per category or per drink, with pills defaulting to 1 min (#46)
• Average per day only counts days you logged something (#47)
• Redesigned Add drink sheet with Material 3 Expressive
• Improved existing translations across supported languages