CDL Prep

Pass your state General Knowledge CDL exam with the help of CDL Prep.

App info

Version :

9.7

Category :

Education

Update :

June 27, 2025

Installs :

1,243,802

Developer :

Jeffrey Diaz

Requires Android :

Android 5.0+

Content Rating :

Everyone

Get it on :

Download APK

App description

Android App Analysis and Review: CDL Prep, Developed by Jeffrey Diaz. Listed in Education Category. Current Version Is 9.7, Updated On 27/06/2025 . According to users reviews on Google Play: CDL Prep. Achieved Over 1 million Installs. CDL Prep Currently Has 5 thousand Reviews, Average Rating 4.7 Stars

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: [email protected]. Thank you and good luck on your exams!

We are currently offering version 9.7. This is our latest, most optimized version. It is suitable for many different devices. Free download directly apk from the Google Play Store or other versions we're hosting. Moreover, you can download without registration and no login required.

We have more than 2000+ available devices for Samsung, Xiaomi, Huawei, Oppo, Vivo, Motorola, LG, Google, OnePlus, Sony, Tablet ... with so many options, it’s easy for you to choose games or software that fit your device.

It can come in handy if there are any country restrictions or any restrictions from the side of your device on the Google App Store.

What's New

Minor bug fixes and grammatical corrections.

Rate and review on Google Play store

4.7

5,179 total

5 86.5

4 5.6

3 1.8

2 1.6

1 4.4

Total number of ratings

Total number of active users rated for: CDL Prep

Total number of installs (*estimated)

Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.

Recent Comments

Robert Winskas

Great App. I started using it to practice a couple of days ago. I passed my test with only 7 out of 90 wrong. It's my fault because I'm too cocky. I was in and out passing all 3 tests in 20 minutes. I highly recommend this study guide. It came recommend to me by 4 other people. The only downfall was the super intrusive ads.

Winston Estrada

WA State: I've been practicing everyday, on the practice mode/ exam modes I've been passing with 86% - 97%. I went to the DOL this past weekend on Saturday, I passed the general knowledge, combination but failed the air brakes. The air breaks exam had questions I have not seen before at all on the app. I was really bumbed out because I was very confident I was going to pass all 3 with no issues. I'm reading the DMV CDL A guide and learning a lot more. I'm retesting tomorrow again.

Tim Ryan (Foolsbal143)

Great app! Really helps and it's not complicated to figure out. But the lending tree ads are making me lose my mind. You can't exit out of it and end up never finding your score. I don't mind ads... they're necessary but if I have to close the app every time lending tree comes up I might as well get a different app

Jonathan Harp

The ui is a bit clunky but it out did my expectations having all the manuals in the app and all of the endorsements. The questions were like word for word lol. I passed container ,general knowledge, airbrakes, doubles&triples, and tanker first try. But I've had experience as a diesel mechanic so that helped a little. Thank you for the app. Edit: I will add you definitely should study the manual for doubles and triples. I barely passed that one.

G T

This app worked great! I was able to ace all of my tests gen knowledge, air brakes, doubles/triples, tanker and hazmat.. the words may be different from the actual tests on some questions, however one should be more than able to discern which is correct. The ads, understandable.. it's a free app with great information what do you expect.. It's "CDL prep" and does exactly that.

Shakina Nichols

Speaking from my own personal experience, if you're taking the general knowledge, air brakes, or passenger endorsement tests in Florida you'll want to use this app, because the practice mode, and exam mode have the exact same questions as the test, word for word. I can't speak for all the other endorsement tests, just the ones listed on this review. I passed each one of the tests on my first try. I don't think currently that there is a better app in the Play Store that's better than this one.

Sterling Adams

Spelling and grammar errors aside, I was left frustrated at contradictory questions, questions with multiple correct answers, or getting a question wrong even though I knew it to be right, as confirmed by the State issued study material. I expected some questions to be repeated, but asked in a different way, lots of tests do that, but for the same question to mark an answer correct on one occurrence, and then mark it incorrect on the next occurrence, I grew very tired of this app very quickly.

Tommy Roberts

Overall this app has been very helpful. Ads can be distracting, but I get it. It's free. So it is what it is. They need to do some updating on the hazmat portion for Florida. I went and took the exam and passed, but there was five or six questions on the exam that were not in the prep test. That's why I took two stars off.