IPHONE · APPLE WATCH · FREE

Every sip
counts.

Log water, tea, coffee and juice. Waterline converts each drink into the water it actually gives you and syncs it to Apple Health. No account: your entries stay on your device.

Coming to the App StoreRead the privacy policy
Requires iOS 18 · watchOS 11 简体中文 / 繁體中文 / English / 日本語 / 한국어
18

built-in drinks, with caffeine and alcohol estimates

5

languages: your device's, or pick one in the app

0

accounts, ads or third-party trackers

2

devices, iPhone and Apple Watch, kept in sync

Features

Log it
in one tap.

No forms to fill in. Open Waterline to see how much you've had and how much is left. Logging a drink takes a single tap.

  • Tap to log, hold to adjust

    The + menu holds your four quick drinks. Tap to log the usual amount; hold to change the amount or time.

  • Effective hydration, not just volume

    Coffee counts at 0.93, beer at 0.6. The level in the glass is the water your body actually gets.

  • Reminders that know you just drank

    Smart reminders skip the times you've just logged and stop once you reach today's goal.

  • Apple Health and Apple Watch

    Water and caffeine go to Apple Health. Raise your wrist to log a drink on your watch.

  • More on hot days and workout days

    When it's hot or you've worked out, today's goal goes up, then back down on normal days.

Drinks

18 drinks built in

Caffeine, alcohol and hydration factor worked out for each

  • Water
  • Tea
  • Coffee
  • Juice
  • Sparkling water
  • Lemon water
  • Milk tea
  • Latte
  • Espresso
  • Milk
  • Sports drink
  • Cola
  • Energy drink
  • Soup
  • Beer
  • Wine
  • Cocktail
  • Baijiu
Privacy

Your data
stays yours.

Read the full privacy policy
  • No account, no servers

    Your entries, profile and settings live on your device. With iCloud sync on, they go only to your own iCloud.

  • Health data stays with Apple Health

    It moves only between your device and Apple Health. It is never used for ads, sold or shared.

  • No ads, no tracking

    No advertising identifier, and no third-party analytics, tracking or crash reporting.

Start with today's first glass.

Coming to the App Store

Free · iPhone and Apple Watch