CDL Prep Test 2025 4+

I used the app provided by my state dot (Iowa), paid their premium fee and studied like crazy, getting all correct many times on all the practices tests and covering all material, yet when I took the exam there were many many questions I was never presented in the prep.

This app however seemed to cover all of them, after trying this resource I passed on the next attempt.
The feature to flag question that you need to review and present them on their own is a great feature. I failed twice before this app and nailed it after using this tool once…and aside from some ads, it was free.
My only complaint was a few questions that included fractions in the answers were presented in time and date formula which does not make sense. It was easy to provide feedback on those Ana I hope they get updated soon.

I am preparing for the Hazmat & Tankers endorsements. I have tried several apps. This one is the most thorough & helpful with the ability to “star” a question. This feature helped me correct questions I kept getting wrong. I also appreciate the info below the answers that explain the topic whether or not I get question right or wrong. Most apps only give info when you get it wrong. Having the info available, and reading through it, helped me to steadily increase scores.

This has been helpful, worked for me. Spent about 5 hours the day before my test on this app. I just did all the test in the sections I’d be testing on, I only took all the general knowledge tests once and took the passenger ones two or three times and air brakes a few times. I only miss a few questions and passed my first time taking the DMV test. All of the questions on the DMV test I seen on this app, some kinda worded a lil different though. Good luck to you future drivers and be safe out there.