Waltermelon
Waltermelon
Last checked: October 15, 2026. Waltermelon version 1.5.0, Waterllama version 1.94.10.
We make Waltermelon. To compare, we used the Waterllama app ourselves and read its App Store listing, website and terms. Links are in the Sources section at the end.
Why choose Waltermelon over Waterllama
- Track your water with friends. Add friends and see each friend's streak and how close they are to today's goal, right next to yours, plus their week on their profile. Cheer them on or send a nudge with one tap. It's all free. Waterllama has no friends list.
- Challenges you do together. Start a challenge with friends, pick its type and length, and if the group makes it, everyone earns Drops. The bigger the team, the bigger the reward. A 3- or 7-day daily goal challenge is free, and joining a friend's challenge is free. In Waterllama, challenges are Premium-only, and you do them alone.
- Something to do every day, for free. Daily challenges give you a few small tasks each day, like hitting your goal or drinking before a set time. Each one earns Drops, and you can spend them on a Rescue Shield that saves your streak when you miss a day.
- Coffee and tea are free. Waterllama's free version logs only water. In Waltermelon, water, coffee and tea are free to log, each counted by how much it really hydrates, and caffeine is tracked for free too.
- AI drink logging: just type it. With Premium, type "iced oat milk latte, 16 oz" and Waltermelon fills in the hydration value, caffeine and sugar. In Waterllama, any drink that isn't on the list has to be built by hand, with its values typed in yourself.
- Sugar tracking. Waltermelon tracks sugar from your drinks with Premium. Waterllama doesn't track sugar.
- A goal that fits you. Your daily goal also takes your age into account; Waterllama's App Store listing names weight, activity, weather and gender, not age. Both apps adjust for pregnancy or breastfeeding.
- iPhone and Android. Waterllama is Apple-only. With Waltermelon, a friend on Android can join you, and Android users get widgets and Health Connect sync.
- Walter. Our animated watermelon mascot celebrates your goals, streaks and achievements with you.
What Waterllama has that we don't (yet)
- An Apple Watch app. If you want to log drinks from your wrist, Waterllama can do that today; our watch app is in the works. On iPhone, our widgets and Siri Shortcuts let you log without opening the app.
- A bigger built-in drink list. Waterllama has over 150 drinks in its list, all of them Premium except water. Waltermelon has 20 built in, and with Premium you can type any other drink instead of looking for it.
Logging drinks other than water
Both apps count drinks by how much they hydrate, not only by volume, and in both alcohol lowers your total. The difference is what you get for free: Waterllama's free version logs only water, while Waltermelon lets you log water, coffee and tea for free, caffeine included. The other 17 built-in drinks and AI logging of any drink you type are Premium, with up to 60 AI lookups a day.
Plans and pricing
Both apps are free to download, with optional Premium, and neither shows ads.
- Waltermelon: weekly and yearly plans. The yearly plan comes with a 7-day free trial for new subscribers on iPhone and Android.
- Waterllama: subscriptions and a one-time purchase. Drinks other than water, challenges, custom drinks and editing past entries are Premium.
Prices change by country and over time, so check the current price on the App Store or Google Play.
Which one should you pick?
Choose Waltermelon if:
- you want to keep each other on track with friends, family or a partner, and take on challenges together;
- you drink coffee or tea and want to log them without paying;
- you'd rather type a drink than look for it in a list;
- you want to track caffeine and sugar;
- you or your friends use Android.
Waterllama may suit you better if an Apple Watch app is a must-have and you don't need friends or shared challenges in the app.
Sources
Waterllama checked in the app and on its pages on October 14 and 15, 2026; Waltermelon on October 15, 2026. US storefronts. Waterllama's App Store listing re-checked on October 17, 2026.
- Waterllama on the App Store: apps.apple.com/us/app/id1454778585
- Waterllama website and terms: waterllama.com, terms of use and privacy policy (PDF)
- Google Play search for Waterllama: play.google.com
- Waltermelon on the App Store: apps.apple.com/us/app/id6752122339
- Waltermelon on Google Play: play.google.com, app.waltermelon.mobile
Spotted something out of date? Write to support@waltermelon.garden and we'll fix it.
Waterllama is a trademark of its owner. Waltermelon is not affiliated with the makers of Waterllama. App icons are shown only to identify the apps.
