11 WaterMinder
Staying hydrated is very important to good health. WaterMinder helps you set goals and stick to them by reminding you to drink and visualizing your daily intake.
The app has hydration statistics for a variety of beverages, features an Apple Watch app, and is highly customizable. You can customize your avatar, earn achievements, send stickers in iMessage, use 3D Touch to add a drink, and view your hydration history.