250+ iOS apps & games curated and reviewed
The best water challenge apps and games on iPhone average 4.7★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (1.1K) | Yes | No | Sep 2026 | |
| 2 |  | Free | 4.6★ (22K) | Yes | Yes | Sep 2026 | |
| 3 |  | Free | 4.9★ (160K) | No | Yes | Sep 2026 | |
| 4 |  | Free | 4.6★ (26K) | Yes | Yes | Sep 2026 | |
| 5 |  | Free | 4.5★ (20K) | No | Yes | Sep 2026 | |
| 6 |  | Free | 4.6★ (24K) | Yes | Yes | Sep 2026 | |
| 7 |  | Free | 4.7★ (106K) | Yes | Yes | Sep 2026 | |
| 8 |  | Free | — | Yes | Yes | May 2026 |
This app combines physics puzzles with vocabulary challenges. Pour colorful letter-waters between cups to spell words, with modes for word completion, speed spelling, and creative play. Expand your vocabulary and improve spelling through innovative gameplay.
This app helps you track your daily water intake and reminds you to drink regularly. It calculates your personalized daily water goal based on your gender and weight, and offers features like a diverse drink menu and smart reminders to help you build healthy hydration habits.
This app helps you stay hydrated with smart reminders and fun challenges. Track your water intake from various beverages, collect cute characters, and reach your daily hydration goals. It offers personalized recommendations and syncs with Apple Health.
