Caffi - Caffeine Tracker

GerrOS

About this app

Caffi — know your caffeine, protect your sleep. Built for Wear OS.

Most caffeine apps just count down from your last cup. Caffi does it properly: it models the caffeine actually in your body with a real pharmacokinetic curve — both the absorption (the rise after you drink) and the elimination (the slow decay) — so the peak and the timing are realistic, not guessed.

At a glance you see how much caffeine is in your system right now, exactly when you'll be able to sleep again, and whether you're still under your daily limit. Perfect for protecting your sleep, timing a pre-workout boost, and keeping your intake in check.

FEATURES
• Live caffeine level (mg/L) on a clean colour gauge
• Sleep-safe time — the moment your level drops below your personal sleep threshold, with a bedtime marker
• Daily total against your limit, colour-coded green / orange / red
• Curve graph with stimulation and sleep thresholds, bedtime line and your intake points
• Today's drinks list and 7-day and 30-day statistics with bar charts
• One-tap logging from quick presets (espresso, coffee, energy drink…) or your own custom drinks
• Wear OS tile with your level, daily total and sleep-safe time, straight from the watch face
• Everything runs on the watch: no phone, no account, no data leaves the device

MAKE IT YOURS
Set your body weight, caffeine half-life, sleep and stimulation thresholds, daily limit and bedtime — Caffi recalculates your personal curve instantly.

Drink smart. Sleep better. Caffi.

What’s new

• New round app icon
• Swipe back now works in the Add menu and settings
• Tile: quick-add buttons for your 3 most recent drinks
• Tile: same colour gauge as the app