H2U
Drink water together
A hydration tracker built for two people. You each log what you drink, and you each see the other's progress as it happens.
H2U is on Android. There is no iPhone version yet.
What it does
- Calculates a daily target from figures you enter — and lets you override it.
- Logs a drink in one tap, and lets you edit or undo any of them.
- Pairs with one other person, so two rings update live on both phones.
- Sends a short nudge — rate-limited, and never outside the other person's waking hours.
Pairing is optional. The app works on its own, and nothing asks you to invite anyone before you can use it.
What it isn't
Your recommended intake is general wellness guidance calculated from figures you enter. It is not medical advice, H2U is not a medical device, and a clinician's fluid target governs over ours. The Terms say this at greater length, and mean it.
Privacy
No advertising, no analytics SDK, no advertising identifier, and your data is never sold. A paired partner sees your daily total, not your individual drinks or your body metrics. These pages set no cookies and make no third-party requests at all.