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 August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (6) | No | Yes | Aug 2026 |
| 2 |  | Free | 4.7★ (14) | No | Yes | Aug 2026 |
| 3 |  | Free | 5.0★ (7) | No | Yes | Jul 2026 |
| 4 |  | Free | 4.7★ (12) | No | Yes | Aug 2026 |
| 5 |  | Free | 4.4★ (7) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.5★ (620) | Yes | Yes | Aug 2026 |
| 7 |  | Free | — | No | Yes | Aug 2026 |
| 8 |  | Free | 5.0★ (4) | No | Yes | Aug 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 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 Certified Pool & Spa Operator exam with this comprehensive test preparation program. Access an extensive question bank, detailed explanations, and progress tracking to master aquatic environment safety and management. Study with up-to-date materials and simulated exams for confident certification.
Prepare for your NCCCO certification exam with practice questions and a load chart calculator. Master net capacity calculations, crane setup, and hand signals. Offers free daily questions and comprehensive monthly or annual subscriptions for full access.
Prepare for your wastewater treatment operator certification exam with a comprehensive study guide. Access over 1000 practice questions, detailed explanations, flashcards, and an AI tutor to master all five key content areas. Track your progress and simulate exam conditions to ensure you're ready for certification.
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.
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 Operator Certification Exam with comprehensive study tools. Access an extensive question bank, detailed explanations, and personalized progress tracking. Study anytime, anywhere with offline access and expert-led review resources.
Prepare for your CNOR certification exam with a comprehensive mobile study tool. Practice with over 900 questions across seven key domains, utilize versatile testing modes, and study detailed data for each test to boost your confidence.
Prepare for your Pumping Apparatus Operator exam with practice questions and answers. Save your favorite questions and utilize exam mode for realistic testing. This app offers an ad-free experience to aid your studies.
Prepare for your CNOR nursing exam with realistic practice tests and quizzes. This app offers over 2,000 expert-written questions with detailed explanations, personalized study plans, and progress tracking to help you pass on your first attempt.
Prepare for your Mobile Crane Operator exam with an AI-driven practice test app. It offers over 4500 questions, categorized mock tests, and progress saving. Get ready to excel in your certification journey.
Prepare for NREMT certification exams with over 4,000 expert-written questions and detailed explanations. This app offers realistic practice tests, personalized study plans, and an AI tutor to help you pass on your first attempt.
Prepare for the NLN NEX nursing entrance exam with a professional mobile app. Study specialized content and practice with over 900 questions across Verbal, Mathematics, and Science domains. Boost your confidence for exam success.
Prepare for your IFSAC & Pro Board Driver Operator certification exam with thousands of practice questions and detailed explanations. Covers all essential chapters, offering dedicated exams and a 'Question I Got Wrong' feature for targeted study. Study offline with this ad-free, native app.
Prepare for your EMT-B, NREMT, and Paramedic exams with practice tests and personalized study tools. Focus on weak subjects, review mistaken questions, and create custom quizzes to track your progress and improve your scores.