教练王者 (Coach King) is an app developed by Shenzhen Jianxing Network Co.Ltd. It is specifically designed for fitness coaches to prepare for their professional exams and international certifications. The app offers a wide range of features including online practice tests, high-quality courses, and exam registration.

The app's key features include:

1. High-Quality Courses: It provides video courses covering topics such as fitness coaching skills and human anatomy. Renowned trainer Zhao Kan, with over 20 years of coaching experience, guides users in their fitness coach exam preparation.

2. Practice Tests: With over 10,000 carefully selected practice questions, the app ensures an efficient and smooth practice experience.

3. Exam Q&A: Users can find answers to frequently asked questions related to the exams and get clarification on various topics.

4. Question Analysis: Detailed explanations of fitness coaching skills, NSCA-CPT, and ACE-CPT exam questions help users understand concepts and reinforce their knowledge.

5. Practical Handbook: The app includes essential exam points and accompanying illustrations for the junior and intermediate levels of fitness coach practical exams, allowing users to review anytime, anywhere.

6. Video Demonstrations: Senior evaluators personally demonstrate key movements and common errors in the junior practical exams.

7. 3D Character Demonstrations: The app features professional 3D models that provide a comprehensive view of movements from multiple angles, helping users master the concepts and focus on details.

8. Certificate Score Inquiry: Users can conveniently and quickly check their personal fitness coach exam scores within the app, making it a one-stop solution for exam preparation.