CDL Practice Permit Tests is an Android app developed by shopapp.ltd that helps prepare commercial driver’s license (CDL) applicants to pass their CDL exams on the first try. The app features three exciting test modes and over 2000 questions based on the official CDL manual, ensuring that you’ll be ready for any vehicle class and every endorsement.

One of the most impressive features of the app is its learning-by-category mode, which allows you to study specific topics and get detailed explanations for each question. In addition, you can view all traffic signs grouped by category and save your favorite questions for later practice.