249+ iOS apps curated and reviewed
The best water safety challenge apps on iPhone average 3.7★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated November 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 | |
| 2 |  | Free | 4.5★ (20) | No | No | Oct 2026 | |
| 3 |  | Free | 2.5★ (11) | No | No | Oct 2026 | |
| 4 |  | Free | 1.0★ (1) | No | No | May 2026 | |
| 5 |  | Free | 1.0★ (2) | No | No | Nov 2026 | |
| 6 |  | Free | 4.8★ (6.1K) | No | No | Nov 2026 | |
| 7 |  | Free | 4.8★ (14K) | No | No | Nov 2026 | |
| 8 |  | Free | 2.0★ (205) | No | No | Oct 2026 |
This app monitors your water filtration system, providing real-time quality data and tracking your consumption. It alerts you to local toxins and violations, ensuring your filtered water is clean, healthy, and alkaline.
Manage your Waterdrop brand water purification devices, track filter lifespan, and receive timely replacement reminders. Access customer support and check U.S. water quality reports for safe drinking water.
