Track your daily water intake, set a hydration goal that fits you, and build a consistent drinking habit with smart reminders.

Fill Up is a simple water tracker and hydration reminder that helps you log how much water you drink throughout the day. Reminders respond to your progress: they stay quiet after you reach your daily goal and tell you how much you are missing when you fall behind.

A daily water goal that fits you

Enter your height and weight to receive a suggested daily water goal, or choose your own target. See your current intake and progress at a glance.

Log water with one tap

• Small, standard and large cups, plus bottles
• Quick one-tap water logging
• Custom amounts for the glass or bottle you actually use
• Easy removal of accidental entries

Smart hydration reminders

Use water reminders that adapt to your day instead of following a rigid schedule:

• Notifications stop after you reach your daily goal
• See exactly how much water you are missing when you fall behind
• Choose your reminder window and frequency
• Set different reminder hours for weekdays and weekends

Hydration insights and statistics

Go beyond a basic water log and understand your drinking habit:

• Hourly water intake breakdown
• Averages for each day of the week
• Monthly goal completion rate
• Seven-day hydration chart
• Longest streak, best day, total water and active-day records
• Complete daily water history

Keep your hydration streak

Every day you reach your goal adds to your streak. If you miss a day, you can watch a short optional video to protect it.

Your data stays private

No account or sign-up is required. Your water log is stored on your own phone. Deleting the app also removes its locally stored data.

More features

• Light and dark themes
• Daily intake safety warning
• Available in eight languages
• Optional one-time Remove Ads purchase with no subscription

Use Fill Up to make daily water tracking simple, schedule reminders around your routine, and see how your hydration habit changes over time.