Track hydration according to your real needs
Eight glasses a day is too simple a rule. Happy Assistant compares logged drinks, water from meals and a need adjusted to the day's context.
What counts in the gauge
- Water, coffee, tea, soups and other drinks with an appropriate coefficient.
- Drinks described inside a meal, such as a 150 ml smoothie or a shake mixed with water.
- Water in food and a small amount produced by metabolism.
An anonymised example
For a fictional 68 kg profile, the baseline depends on weight and age. A logged workout and a hot day can raise the benchmark. A 150 ml smoothie counts as a drink; with no logged drink, the day stays unknown rather than being labelled insufficient.
Method and limits
Daily need starts with weight and age, then increases only when known data justify it: logged exercise, heat, excess salt or alcohol. Drinks, food water and metabolic water are separated to avoid double counting.
- Measurement: entered drink volume.
- Estimate: water from food and context-related need.
- Uncertainty: sweating, indoor climate, pregnancy, breastfeeding and medical conditions are not measured.
- Reference: EFSA water-intake guidance; seek medical advice if fluids must be restricted.
Frequently asked questions
Does coffee dehydrate you?
In usual amounts it contributes to hydration, although the app applies a slightly lower coefficient than for water.
Can I use this benchmark with kidney or heart disease?
Not without medical advice. Any fluid restriction or prescription from a clinician always takes priority.