Brim

About Brim

Brim helps you drink enough water without thinking about it. It works out a daily goal from your weight, activity and climate, shows you how it got there, and lets you log a drink with one tap.

Everything you enter stays in your browser. There’s no account to create. Reminders are the only feature that uses a server, and they never include amounts, goals or health data.

Highlights

• A goal that fits you

  Based on body weight, exercise, climate and pregnancy or breastfeeding, with a clear breakdown. Or set your own.

• One-tap logging

  Quick-add sizes, drink types with hydration percentages, custom drinks and undo.

• Smart reminders

  Timed from your last drink, within your hours, and paused once you reach your goal. They arrive even when Brim is closed.

• History and streaks

  Week, month and year charts, averages, goal completion and your best streaks.

• Works offline

  Installs as an app and works without a connection, in light or dark mode, in metric or US units.

• Your data, your call

  Back up and restore as JSON, export to CSV, or delete everything in one step.

Privacy

• No account, cookies, analytics, ads or requests to other sites.
• Your drinks, goal, body weight and settings are stored only on your device and never uploaded.
• Reminders are optional. For them the server keeps a push address, your reminder hours and time zone, and two timestamps. Never amounts, goals or health data.
• Reminder messages are written on your device and end-to-end encrypted. Reminder data is deleted when you turn reminders off, or after 60 days without opening Brim.

Who can use it

Free for anyone to use, with no account and no sign-up.