Droplet calculates a personalized daily water goal from your body and the weather, then reminds you — smartly — until you hit it.
Calculated from your weight, age, gender, and activity level — not a flat "8 glasses" rule.
Your goal adjusts automatically for local temperature and humidity.
Nudges you only when you're actually behind pace — within hours and days you choose.
Daily streaks and unlockable badges keep hydration a habit, not a chore.