Track your caffeine. Protect your sleep. Real-time pharmacokinetic curves.
About this app
Caffeine Health is a beautifully designed Android app that helps you understand how your caffeine intake affects your body throughout the day — and whether that late-afternoon espresso might cost you sleep tonight.
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 • Drink detail sheets showing individual contribution curves • Quick actions — edit, duplicate, or delete entries • Material 3 Expressive design with dynamic color • Montserrat typography and haptic feedback throughout • Full dark mode support
Privacy:
• Fully offline — all data stays on your device • No ads, no tracking, no analytics, 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.
Licensed under GPL-3.0-only.
What's New in v2.3.1
Imported from the F-Droid repository index.
- • Fix a crash on launch affecting some devices and custom ROMs (splash screen exit)
- • Time zone now follows your device automatically as you travel (new "Match system time zone" option, on by default; turn it off to pin a fixed zone)
- • Cleaned up wording in Caffeine Coach messages
- Includes everything from 2.3.0:
- • Caffeine Coach: the smallest, best-timed dose suggestion under your home chart
- • Type exact fractional serving amounts (e.g. half a soda)
Version history
Jul 16, 2026 · 14.1 MB · Android API 31–36 · code 11
Imported from the F-Droid repository index.
- • Fix a crash on launch affecting some devices and custom ROMs (splash screen exit)
- • Time zone now follows your device automatically as you travel (new "Match system time zone" option, on by default; turn it off to pin a fixed zone)
- • Cleaned up wording in Caffeine Coach messages
- Includes everything from 2.3.0:
- • Caffeine Coach: the smallest, best-timed dose suggestion under your home chart
- • Type exact fractional serving amounts (e.g. half a soda)
SHA-256 00e54db7d60a172dba0a901e7ee6671e1c7732796172cb1902002814f1a0097b
Jun 10, 2026 · 14.1 MB · Android API 31–36 · code 8
Imported from the F-Droid repository index.
SHA-256 a536a6490c6a849255fb3786d4c11c56308c5454583891ae7394474489854289
May 28, 2026 · 14.1 MB · Android API 31–36 · code 7
Imported from the F-Droid repository index.
SHA-256 f19ac29414c9dbdf599f9d6874bf109e11676b034fee807a00656e6644a3b810
Will it run on your device?
74%
- Targets newer Android builds, so legacy devices may be excluded.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.uc.caffeine is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 2.2.2-beta.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Caffeine Health first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Caffeine Health, and a listing is removed when the evidence for it stops holding up.
Get Caffeine Health
Every source we list for com.uc.caffeine is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
00e54db7d60a172dba0a901e7ee6671e1c7732796172cb1902002814f1a0097b
Signing certificate
c76cc07ef96d4a42abc6e42acfecb55c6a17574f5d557208fa024bfc1b74e12a
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
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