WaterChamp

WaterChamp is a drink tracker for iPhone and Android. It has 102 built-in drinks, from espresso to boba, and each one carries its own hydration, caffeine, alcohol and calorie values. Milk counts for more than water, wine for half and spirits for nothing. The app sets your daily goal from your weight, activity and climate. It also shows a live hydration level that drops between drinks, forecasts when you'll get thirsty and reminds you before then.

For caffeine, the app models how your intake fades over time. It works out your last chance for coffee: the latest point you can have an espresso and still be ready to sleep at bedtime. It also tracks alcohol, and the feature list includes BAC. Streaks, check-ins that reward drinks spaced through the day, and 29 collectible stickers keep the habit going, all fronted by a water-drop mascot.

On iPhone the app writes water, caffeine and alcohol to Apple Health. On Android it writes water and caffeine to Health Connect. It reads workouts and sleep to raise your goal on active days, and the page says nothing is uploaded to the developer. Home and lock screen widgets are included. Logging, the daily goal and widgets are free. A Pro subscription adds the calendar and full history, the caffeine and alcohol charts, and custom drinks. An Apple Watch app is planned.