249+ iOS apps & games curated and reviewed
Water Treatment Level 1 is the household name in water treatment, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | Yes | May 2026 | |
| 2 |  | Free | 4.7★ (14) | No | Yes | Sep 2026 | |
| 3 |  | Free | 4.5★ (620) | Yes | Yes | Oct 2026 | |
| 4 |  | Free | 4.4★ (58) | No | No | Oct 2026 | |
| 5 |  | Free | — | No | Yes | May 2026 | |
| 6 |  | Free | 1.5★ (2) | No | No | May 2026 | |
| 7 |  | Free | 3.0★ (1) | No | No | Oct 2026 | |
| 8 |  | Free | 5.0★ (1) | No | No | May 2026 |
Prepare for your water treatment operator certification exam with practice questions, realistic simulations, and detailed explanations. Track your progress and stay updated with the latest exam materials to build confidence for exam day and your career.
Prepare for your water operator certification exam with a comprehensive study tool. Access thousands of practice questions, detailed explanations, and progress tracking. Master water treatment, distribution, and wastewater topics to advance your career.
