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You probably know that drivers of commercial tractor-trailers need a Commercial Driver’s License. But did you know that you may also need one to operate a single commercial motor vehicle? Expand your job opportunities and avoid expensive citations for driving without the proper license. Use this app to review the concepts and rules you need to master before taking the written and skills tests.

Easy CDL for Class B uses:

- friendly, easy-to-follow audio lectures

- detailed text with illustrations

- over 200 test questions

- detailed answer explanations

The fourth in a series of four- and five-star apps for CDL prep, this app was developed by Devorah Fox, President of Mike Byrnes & Associates, Inc. and John Rojas, Education Coordinator for Mike Byrnes & Assoc., Inc. and director of Transportation Training Services at Del Mar College. Publishers of the BUMPERTOBUMPER® commercial motor vehicle books, Mike Byrnes & Assoc., Inc. has been helping to launch successful truck driving careers since 1987.

Ratings and Reviews

Barely scratches the surface


I had to study for a Class B CDL and searched out an app to help me. This was the only one I came across and the description made it sound good, with lectures being a strong selling point. Turned out that the lectures were just selections from the manual being read by a novice spokesperson. The text automatically scrolls, which would have been nice, but was poorly programmed because there are times when it scrolled all the way to the top as the narration continued, or was just out of sync.
The real problem was that the questions were too easy and didn't cover even half of the material I needed to test over. Many of the questions were worded in a way that the correct answer can be reduced by common sense--not the way it is in the real testing situation. There was also a mistake in one of the questions--two separate questions about front tire minimum tread depth with two different correct answers (by the way, the correct answer is 4/32).
Would have been great had it been more immersive and someone had taken the time to create an app for people who need help passing a CDL written exam.

Do not buy

Cdl master

Answers to the questions are wrong on there end. Stated tread depth on front tires was 2/32 when it's actually 4/32 you will fail if you purchase this app.


65 MB
Requires iOS 3.2 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Study by App, LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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