Create and track custom drink recipes with accurate caffeine content
Premium users can create custom drinks and use AI to automatically calculate caffeine contents, then save and sync these recipes to iCloud for consistent tracking across devices.

A caffeine tracker with attitude and no accountability
Alyx helps you log caffeine, visualize its impacts, and see how it affects your sleep. It may help you rethink that third espresso. Or, encourage you to drink several more. There's really no way to know.
Premium users can create custom drinks and use AI to automatically calculate caffeine contents, then save and sync these recipes to iCloud for consistent tracking across devices.
The app stores all data in Apple Health and syncs via iCloud, enabling seamless access on iPhone, iPad, and Mac. Widgets and Siri Shortcuts extend functionality across the Apple ecosystem.
Alyx displays trending data showing whether caffeine consumption is increasing or decreasing, plus a Hall of Fame feature for consumption records. Multiple charts visualize patterns and health impacts, helping users become aware of and adjust excessive habits.
The app generates a customized 'Last Call' alert each day based on individual caffeine metabolism, allowing users to set alarms so they avoid late-day consumption that would interfere with sleep.
Alyx logs coffee, espresso, energy drinks, and custom beverages, then calculates how much caffeine remains in the body at bedtime and forecasts sleep loss. Users see charts showing caffeine consumption trends and direct correlations with sleep duration via Apple Health integration.