Rill.

what it is.

A calm, tactile hydration tracker. Log a drink with one tap or a slider, watch your glass fill toward your daily goal, and keep your streak going. It’s free, with no ads, no in-app purchases, no accounts and no analytics, and everything stays on your iPhone.

highlights.

• A drag slider that snaps in 50 ml / 1 oz steps with a haptic tick on each step, plus a success haptic and droplet burst at your goal.
• An animated liquid vessel that fills to today’s percentage.
• A month calendar with a progress ring per day, current and best streaks, and goals met this month.
• Home Screen and Lock Screen widgets, and optional write-only Apple Health logging.
• Private by design: all data is stored on the device, with no backend.

how it's built.

Expo SDK 57 with Expo Router and strict TypeScript, Reanimated for 60 fps animations, Gesture Handler for the slider, and Expo Haptics. Built with Todd.

• iOS
• Expo
• React Native
• TypeScript