Waltermelon

Waltermelon is a water tracker for iPhone and Android that makes drinking enough water feel like a game you play with friends.

Log water, coffee and tea in one tap, each counted by how much it really hydrates you, with caffeine tracked for free. Set gentle reminders between your wake-up time and bedtime, from every 30 minutes to every 3 hours, and let them stop once you hit your goal. Home screen widgets log a drink without opening the app.

Hydration is easier together. Add friends to see their streaks and today's progress, cheer them on or send a nudge, and take on shared challenges where the whole group earns rewards. Daily challenges earn Drops you can spend on a Rescue Shield that saves your streak on a bad day.

Your daily goal is based on your weight, age, sex, activity, climate and pregnancy or breastfeeding. Walter, an animated watermelon, celebrates every glass, streak and goal with you.

No ads, and no account needed to start. Premium adds every other drink (juice, milk, soda, beer, wine and more), AI logging of any drink you type, sugar and alcohol tracking, a hydration score and weekly insights.

Syncs with Apple Health and Health Connect.