248+ iOS apps curated and reviewed
The best operator exam prep apps on iPhone average 4.7★ across 248+ 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 | 5.0★ (6) | No | Yes | Aug 2026 | |
| 2 |  | Free | 5.0★ (4) | No | Yes | Aug 2026 | |
| 3 |  | Free | 4.7★ (14) | No | Yes | Sep 2026 | |
| 4 |  | Free | 5.0★ (7) | No | Yes | Jul 2026 | |
| 5 |  | Free | 4.4★ (7) | No | Yes | Aug 2026 | |
| 6 |  | $4.99 | — | — | No | Aug 2026 | |
| 7 |  | Free | — | No | Yes | Aug 2026 | |
| 8 |  | Free | 4.5★ (620) | Yes | Yes | Sep 2026 |
Prepare for your Mobile Crane Operator exam with practice questions, realistic simulations, and detailed explanations. This study companion helps you master crane operation safety, rigging, and OSHA compliance to advance your career.
Prepare for your NCCCO Certified Crane Operator exam with over 500 practice questions, smart study modes, and realistic exam simulations. Track your progress and study offline to master all exam topics and pass with confidence.
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.
