Choose an amount, then see the response
The Android shipped path offers 100, 200, and 500 ml quick amounts for common actions. A confirmed tap updates today’s total, goal progress, and the water level inside the 3D bottle.
When the amount is different, open the scale and choose a custom 100–1000 ml volume in 50 ml steps. The value is the amount you confirm, not camera recognition and not a number the app invents for you.
Logging boundary: Hydrate Lab does not recognize whether you drank water and does not create a hydration record without your confirmation.
What if the tap was wrong?
Use undo for the latest record when you made a mistake. Undo is intentionally scoped to the most recent local action; return to the day’s record list and scale when you need to check the broader context.
Three useful habits
- Use the amount you actually drank instead of filling a gap in the goal.
- Use the scale when precision matters, rather than stacking quick taps.
- Look at the progress and water level after logging so the current device state is clear.
For the day boundary and daily goal, read Goal and 06:00. For the history view, read History and progress.