
Free
In-App PurchasesWith Ads
Rating summary
About
Wasser-Challenge helps you drink enough every day – on your own or together with friends, family, your club or colleagues.
Please note: the app is currently available in German only.
HOW IT WORKS
• Log every glass with one tap: +100, +250, +500 ml or a custom amount
• The progress ring shows how far you are today
• A drink reminder at the time you choose
• View, edit or delete your entries
STAY ON TRACK TOGETHER
• Rooms for your team, family, club or office – join with a room code
• Shared daily goal, leaderboard, streaks and an overview of recent weeks
• Cheer each other on with push notifications
• New group challenges every week
LEVELS AND ACHIEVEMENTS
• Earn XP and level up
• Daily challenges with bonus XP
• 18 achievements to unlock
TEAM CHALLENGE OF THE MONTH
Every month, teams of at least 4 people compete. What counts are the days on which you reach your daily goal – not the amount. The best team wins a prize, in November €10 by SEPA bank transfer. Taking part is free and voluntary. Official rules (German, binding): https://water.rk-studios.de/gewinnspiel – Apple is not a sponsor and is not involved in any way.
YOUR DATA
• No account and no e-mail address needed (an e-mail only if you join the team challenge)
• Servers in Germany
• Manage consents, export or delete your data – right in the app
PREMIUM (OPTIONAL)
The free version contains ads. Premium removes ads and adds advanced statistics (6-week trend, goal rate, weekday analysis) and extra challenges.
Wasser-Challenge Premium is a monthly auto-renewable subscription. The price is shown in the app before you buy. Payment is charged to your Apple ID. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period, and you can cancel it at any time in your Apple ID settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy policy (German): https://water.rk-studios.de/datenschutz
Subscription terms (German): https://water.rk-studios.de/abo-bedingungen
Note: the app is not a substitute for medical advice. Don't drink beyond your thirst; if you have a medical condition, check your fluid needs with your doctor.
Wasser-Challenge is an app by RK Studios UG (haftungsbeschränkt), Halver, Germany.
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What's New in Wasser
1.4.0
October 30, 2026
New: Team Challenge of the Month – drink enough water every day as a team and compete with other teams. Also: team leaderboard, cheers via push notifications, review, new achievements, Premium subscription and many improvements. Rules (German): water.rk-studios.de/gewinnspiel
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Subscriptions & In-App Purchases
Premium
Werbefrei, erweiterte Statistiken, Premium-Challenges.
$3.991 Month









