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.
How many times has CDL Prep been downloaded?
CDL Prep has been downloaded 1.5 million times. In the last 30 days, the app was downloaded 15 thousand times.
What is the rating of CDL Prep?
CDL Prep is rated 4.57 out of 5 stars, based on 5.4 thousand ratings.
Is CDL Prep free?
CDL Prep is free to download. The APK download size is 9.34 MB. The latest version available is 9.13. The last update was on August 7, 2026.
What are the requirements for CDL Prep?
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.
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This app is amazing I would 100% trust it. I normally don't leave reviews on apps, but since I passed my cdl test this app deserves it. Thank you so much CDL Prep this was extremely helpful!
★★★★★Lares Matos· May 8, 2026
Best app for cdl permit all the questions you see in this app they come out on test only very few there were not. Pass with a 100% general knowledge, combinations,air breaks thanks for being so accurate with the questions.there are alot of apps that the questions they give you don't come out on the test will recommend this app to everyone. Thank you guys for provide me we such a great tool.👍🎉 I recently relocated to another state, and I had to retake the Hazmat endorsement pass with 100% best app
★☆☆☆☆Evan King· Aug 6, 2026
I was unable to complete even a single study session as the ad did not close unless I quit the program entirely.
★☆☆☆☆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
★★☆☆☆Murilo Antunelli· Jun 19, 2026
Almost failed my hazmat after nailing 100% a dozen times on the app. It needs to cover more questions or be updated.
★☆☆☆☆Mareicshka Bosley· Jul 29, 2026
Ads and warnings stating I went to an adult site during practice exam kept popping up, and I never received my scores
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