Caffeine Tracker

Track your real-time caffeine level and protect your sleep. See how much caffeine is still in your body, when it will wear off, and when it’s still safe to drink based on your weight and bedtime. Unlock Premium for sleep-safe insights, advanced personalization, daily summaries, and advanced statistics. Caffeine Tracker is a simple yet powerful Garmin Connect IQ widget that helps you understand and control your caffeine intake directly from your wrist. Log drinks in seconds, monitor your estimated caffeine level in real time, and see how caffeine decays over time. With background updates every 5 minutes, glance view support, and watch-face complications, your caffeine status is always visible at a glance. You can also log drinks retroactively with the built-in time picker, and your most-used drinks can be shown first for faster logging. Premium features include: - Latest drink time recommendation: See the last time you can have a selected drink and still stay under your sleep threshold by your configured bedtime - Prediction of when your caffeine level drops below your personal sleep-safe threshold - Adjustable caffeine Half-Life - Half-life Web Wizard: Get a recommended half-life value from a quick questionnaire, then apply it in the app - Customizable sleep-impact threshold - Custom drinks with exact caffeine amounts Advanced daily statistics Included drink presets (plus custom drinks in Premium): Espresso (64 mg), Double Espresso (128 mg), Brewed Coffee (240 ml / 95 mg), Black Tea (45 mg), Green Tea (30 mg), Energy Drink (80 mg), Coca-Cola (330 ml / 32 mg) Take the guesswork out of caffeine. Understand your intake, protect your sleep, and make better decisions throughout the day. Free to use. Optional one-time Premium unlock (no subscription). Unlock Premium: Open the app → Settings → Unlock Premium → Scan QR code with your phone and follow the link. Learn more: https://www.caffeinetracker.app Half-life wizard: https://www.caffeinetracker.app/halflife-wizard.html

V 1.8.3 - Improved the caffeine graph with clearer level lines, labels, and drink markers. - Added a caffeine absorption setting for Premium users. - Updated caffeine estimates to model gradual absorption more realistically. - Improved latest-safe-intake advice and background refresh accuracy. V 1.8.2 - Refreshed the caffeine graph for clearer display on smaller watches - Improved graph scaling so caffeine levels are easier to read - Improved daily summary layout and premium unlock prompts - Added a Docs shortcut from the action menu - Custom time picker V 1.8.1 - Improved background refresh performance and battery efficiency - Fixed caffeine complication updates for more reliable display values - Added support for more Garmin devices V 1.7.7 - Added variable refresh interval for battery optimization V 1.7.6 - Added more fine-grained caffeine half-life presets V 1.7.5 - Minor improvements in premium unlocking V 1.7.4 - Fixed menu sublabel V 1.7.3 - Added feedback menu item - Rating popup V 1.7.2 - Added rating menu item V 1.7.1 - Added “Most-used drinks first” sorting. - Fixed a bug that could crash the app after adding a drink. V 1.6.1 - Fix QR code on slower touchless devices like FR255 V 1.6.0 - Premium unlock is now simplified with a QR code! V 1.5.1 - minor performance fixes V 1.5.0 - Added alternative unlock code input component V 1.4.0 - Added the Latest drink time recommendation for the premium version V 1.3.1 - Stabilize the loading of drinks - Minor bug fixes V 1.3.0 - Improved graph caffeine levels and names - Minor improvements in screen fitting V 1.2.3 - minor performance optimizations - increased the default sleep threshold to a less conservative value of 0.6 mg/l V 1.2.2 - Support for custom drinks with custom caffeine level! - Premium popup improvement - Minor text position improvements - Custom complication improvements