Waltermelon is the water tracker with a tiny, slightly dramatic watermelon. He cheers every glass, nudges you when you forget and throws a party when you hit your goal.
The real app, screen by screen. Log a drink, keep your streak, cheer on friends and open the chest.
The real app, screen by screen. Log a drink, keep your streak, cheer on friends and open the chest.
Everything Walter does in the app, right here on the page. Type, drag, tap. He doesn’t bite.
AI drink loggingWalter’s AI works out the serving, how much it really hydrates, the caffeine and the alcohol. Beer, it turns out, counts against you.
Real answers from Walter’s AI, per standard serving. Unlock AI logging with Premium.
Daily goalEvery sip shows up inside Walter. Drag to drink, and see what happens at 100%.
Daily challengesFresh mini-goals every day. Each one earns a key. Collect all three and the chest is yours.
11402 keys to go
WardrobeComing soonVikings, wizards, sun hats, a very serious mustache. Make Walter unmistakably yours.
Real words from real sippers on the App Store and Google Play.
“I’ve tried a few hydration apps before, but this one is by far the most fun and motivating! The reminders are gentle (not annoying)… Walter the watermelon is so cute, I love him!”
“Really cool app for tracking daily water intake. Love the social aspect. It actually keeps me motivated to drink more water!”
“A genius app that allows you to easily control the amount of fluids consumed during the day. I recommend it to anyone who has trouble drinking water due to a busy schedule!”
“It has a clean, cute interface but also tons of functional features like detailed stats and the option to add friends, but it’s all simple enough to not be a headache to navigate.”
“Helped me a lot to get my daily water dosage in. Walter helps me to be right on track!”
Free tools and guides that work right here in your browser. No download needed.
Yes. Download Waltermelon for free on iPhone or Android and start right away: water, coffee and tea logging, reminders, widgets, friends and daily challenges are all included, with no ads. Want more? Premium unlocks every drink, AI logging, sugar and alcohol tracking and weekly insights.
Waltermelon is way more fun with friends. See each other's streaks and progress, nudge whoever falls behind and take on challenges together. And you don't have to scroll through lists: just type what you drank, from a matcha latte to a homemade smoothie, and Walter's AI works out how much it hydrates you.
How tracking water with friends worksPretty much anything. Water, coffee and tea are built in, and Premium adds juice, milk, soda, beer, wine and any drink you can type. Every drink counts by how much it really hydrates you, so your daily total is the real one.
See how each drink hydratesWalter reminds you between your wake-up time and bedtime, as often as you like, from every 30 minutes to every 3 hours. Turn on smart notifications and the timer resets every time you drink, so he only speaks up when you've gone a while without a sip. Hit your goal and he can stay quiet for the rest of the day.
Yes. We never sell your data and there are no ads in the app. Your profile is there to set your daily goal and to show your progress to the friends you choose. The few services we use to run the app are listed in our Privacy Policy.
Just download Waltermelon for free from the Apple App Store or Google Play Store, set up your profile in under a minute, and Walter will calculate your personalized daily water goal right away. Add friends to stay motivated together!
Work out your goal nowFree on iPhone and Android. Set up in a minute, then let Walter do the nagging.
Waltermelon
