Apple Health provides the starting point
Your weight provides the baseline at 30 ml per kilogram. With your permission, DailySip also uses active calories, workouts and steps from Apple Health. If Health weight is unavailable, your saved weight can be used.
An active day changes your suggestion
DailySip uses your activity from Apple Health. The goal breakdown shows how movement and workouts affect your suggestion.

Weather you can put in context
DailySip considers your local daily maximum temperature. At 23 °C or above, you can enable weather mode; above 26 °C, the app can suggest it. If you spent most of the day in cool rooms, turn it off again. You decide whether the heat actually affected your day.
Daily factors add what Health cannot know
Account for a high-protein or salty diet, sauna, alcohol and fever through daily factors. Select the relevant settings and see how they affect the calculated suggestion.
Understand every contribution
See how your water goal is calculated and how activity, weather and your daily factors contribute.
A fixed goal takes priority
Set your own daily goal in Settings to replace all automatic adjustments. This also applies when a medical professional has given you a specific drinking target. The automatic calculation offers orientation and does not replace medical advice.