Hydrify is a lightweight hydration companion for iPhone and Apple Watch, made by independent developer Niklas Peterson. Rather than pushing a one-size-fits-all water target, it lets you define your own daily goal in milliliters and tracks progress through a clean, glanceable interface. You log drinks as you go, and the app keeps a running picture of how close you are to your target for the day.
Reminders are the core habit-building mechanic. You choose a notification schedule that matches your routine — early mornings, late nights, or a steady cadence through the day — and can adjust the size of your drinking vessel so a single tap logs exactly the amount you actually drank. Because the app supports home-screen widgets, lock-screen widgets, Control Center actions and Apple Watch complications, logging a sip takes seconds without opening the full app.
Privacy is the standout design choice. Hydrify states that hydration data is stored solely on your device, and the App Store privacy label lists no data collected. If you enable iOS Health integration, sips are written to HealthKit, which Apple encrypts even when synced to iCloud. The app is free, requires iOS 17.6 or later, and works on Apple Watch running watchOS 10.5 or later.
