Pass your state General Knowledge CDL exam with the help of CDL Prep.
About CDL Prep
CDL Prep is an education app developed by Jeffrey Diaz.
Download Statistics
CDL Prep has been downloaded 1.4 million times. In the last 30 days, the app was downloaded 12 thousand times.
User Ratings
CDL Prep is rated 4.59 out of 5 stars. The rating is based on 5.4 thousand ratings.
App Information
CDL Prep is FREE to download. The APK download size is 9.35 MB. The latest version available is 9.12. The last update was on June 19, 2026.
Technical Requirements
CDL Prep requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play June 2014.
Description
CDL Prep is the best way to prepare for the Commercial Drivers License General Knowledge, and various endorsement exams. CDL Prep contains questions on the following topics: General Commercial, Air Brakes, Combinations, Hazmat, Passenger, Tanks, School Bus, and Doubles/Triples.
Features: 1. Over 500 questions to practice with.
2. Exam Mode - 60 minutes to answer 50 randomly chosen questions, or 40 minutes to answer 20 to 30 questions on endorsement topics. At the end, review your score and any incorrect answers.
3. Practice Mode - Answer questions and receive instant feedback if you answered incorrectly.
4. Answer Randomization - Answers to questions will not always be in the same position.
5. Performance tracking - Review your performance on every question. Red = You have an average score less than 70%, Orange = You have an average score between 70-89%, Green = You have an average score of 90% and above.
Please send any feedback or request to: CDLPrepApp@gmail.com. Thank you and good luck on your exams!
Recent changes: Minor bug fixes and grammatical corrections.
Get a detailed PDF report for CDL Prep with download trends, rating history,
and key performance statistics — useful for competitive research or tracking your own app.
Learn more
Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.
Passed ny exam is the best I recommended it for anyone fof the cdl test I practice those questions 239 for several time I passed today general knowledge only for today
★★★★★Direct· Feb 24, 2026
5 stars! This app helped me pass my tests 100%. I did the practice tests for about 5 hours. Went in the next day and got my permit! Thanks to CDL Prep!
★★★★★Woodensky Oliver Janvier· Mar 8, 2026
I would like to give a special shout-out to this app. It really helped me prepare and successfully pass all my CDL endorsement exams on the first attempt: • Air Brakes • Passenger • School Bus • Tank • Double/Triples • Combinations I truly appreciate the quality of the practice questions and explanations. This app made a big difference in my preparation and confidence. Highly recommended for anyone studying for their CDL exams! Franck
★★☆☆☆Martin C· Feb 26, 2026
Does the job of preparing you for exams. Memorizing. My gripe is you never retain any information with this app. There's no context. Boom you're talking about draining air from tanks. Im new. I don't even know how many tanks there are in a truck much less know which specific one its talking about. Water and oil in tanks? Draining the air from the same tank? What is this app? There's no button to get context either. The only workaround is to get the answer wrong on purpose, so you can see why
★☆☆☆☆Yah Carter· Jun 5, 2026
Please don't use this app they have several wrong answer example your eyes see hazard to the time the brain knows that this is a hazard is incorrect the answer is The brain tell the foot... like y'all cause me to fail my test at motor vehicle
★★☆☆☆Dan· Jul 2, 2026
I'm in VA, and you need to seriously update your questions. Because you did not cover air brakes 5.3.3, 5.1.14. Also, you didn't cover all the correct wording and question variants
Subscribe to see full ranking history in this country
AppBrain offers valuable information about your app and those of your competitors. Join AppBrain for free and claim this app to view more ranking data, view history etc.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
