Download CDL Prep APK for Android V 9.7

CDL Prep is a reference application developed by Jeffrey Diaz. Free to download and use, this app allows users to prepare for the Commercial Drivers License exams. It contains questions that you might encounter during the exam proper, including topics such as General Commercial, Air Brakes, Combinations, and Hazmats.

There are more than 500 questions to practice within the CDL Prep app. The app even allows you to track your performance on every question you answer. However, the questions have a few spelling and grammar errors. Moreover, as it is free, ads constantly pop up as you practice.