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CDL Prep

CDL Prep

Commercial Drivers License

6.5K ratings
511 reviews
With Ads#99 in free Education
📚 Education
Free
With Ads

Details

  • Released
  • Updated
  • April 14, 2016
  • June 20, 2026

Developer

Jeffrey Diaz
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About

Prepare for your Commercial Drivers License exams with a comprehensive question bank covering general knowledge and various endorsements. Practice with timed exams or instant feedback modes to identify areas for improvement.

✓Over 500 practice questions
✓Timed exam mode
✓Endorsement topic exams
✓Instant feedback in practice mode
✓Randomized answer order
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What users say

Summarized from real user reviews of CDL Prep. Based on 6.5K reviews and a 4.7/5 average, it highlights the 5 positives and 4 negatives reviewers mention most about this Education app.

Positive things

  • 🚀Accurate questions
  • 👍Helpful for passing tests
  • 💯Exactly like real test
  • 🙌Great study tool
  • ✅Passed on first try

Negative things

  • 🔍Some questions not on app
  • 🔢Too many ads
  • 🔀Can't close ads
  • 🤔Inconsistent answers
See all reviews

What's New in CDL Prep

9.12

June 20, 2026

Minor bug fixes and grammatical corrections.

Charts

Top Free

📉 99-2

Education

This app dropped -2 positions in Education chart.

Last updated on August 8, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Excellent CDL Prep!!!

This app has thoroughly prepared me for the CDL permit test so much so that I no longer feel nervous about taking the test. I am 100% certain that I will pass after practicing the questions in this app.
Krystyle74Krystyle74

So many adds

So many adds you can’t focus.
BrkyOnBrkyOn

Ads

Too many ads now
Md21229Md21229

CDL Class A GRADUATE!

This is the only app I used for everything! Including endorsements!
NelJSFNelJSF

Great app

Best app to practice for your CDL test. I tried several apps and this one is the best by far. Definitely 5 stars.
felaskyfelasky
See 506 more reviews

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User experience

🐞

Reported Bugs

2 issues

Back button issues

Bug

Incorrect answers in app

Bug
✨

Requested Features

3 requests

Ad-free version

Feature

Ability to report incorrect questions

Feature

Include state-specific requirements

Feature

FAQ

What is CDL Prep?

CDL Prep is a mobile application designed to help users study for their Commercial Drivers License (CDL) exams. It offers a large question bank covering general knowledge and specific endorsement topics to aid in preparation.

What topics are covered in CDL Prep?

The app covers General Commercial knowledge, as well as specific endorsement topics including Air Brakes, Combinations, Hazmat, Passenger, Tanks, School Bus, and Doubles/Triples.

How does the practice mode work?

In Practice Mode, you can answer questions and receive immediate feedback on whether your answer was correct. This allows you to learn from mistakes as you go and reinforce your knowledge.

Is CDL Prep free to use?

Yes, the application is free to use. It is supported by advertisements, which are displayed within the app.

What are the exam modes available?

CDL Prep offers an Exam Mode that simulates the real test experience. You can choose a 60-minute exam with 50 random questions or shorter exams focused on specific endorsement topics, with timed limits.