“Very easy to use and explains each answer even if you got it wrong.”
Luis C.
The CDL prep app in your language. Start with free practice tests.
Real exam-style CDL permit questions with explanations — in Spanish, Russian and 8 more languages. Built by drivers, for drivers.
4.9Unified rating across the App Store and Google Play · 6,500+ ratings
Store ratings as of Oct 15, 2026
Free practice tests on this site. All 2,500+ questions are in the app with a subscription.
Multi-language interface
Progress tracker and important action items
Flashcards and useful resources
State-specific tests and official handbooks
What drivers say
Real reviews from the App Store and Google Play.
4.9Unified rating across the App Store and Google Play · 6,500+ ratings
Store ratings as of Oct 15, 2026
- Google Play review
“very helpful, easy to use, more organized”
Google Play reviewbigg ballin
Cdl helper👍🏻
“Very useful app for cdl permit exam Ohio👍🏻👍🏻”
App Store reviewСадоржан008
Best app. comfortable in use!
“The application is very easy to use. The best I've ever tried!”
App Store reviewм/о
“A very useful application for studying and preparing for obtaining a CDL.”
Google Play reviewRasul R.
Very useful! Thank you
“For New Jersey working perfectly!”
App Store reviewArtemii S.
New york
“🙏🙏🙏Good job very useful Thank you 🙏”
App Store reviewAgajuma
Very good
“For Ohio works perfectly”
App Store reviewUsers Rudo
“Good for preparing for CDL testing”
Google Play reviewzviadi javakhia
“Thanks to the developers. Very good translation and very easy to study with.”
Translated from Russian by CDL Help
Спасибо разработчикам. Очень хороший перевод и очень легко учить.
Google Play reviewАндрей Г.
“A wonderful program, easy to pick up, everything is clear and accessible. Good luck.”
Translated from Ukrainian by CDL Help
чудова программа, швидко засвоюється , все доступно і зрозуміло. Удачі.
Google Play reviewSvitlana F.
“Very good practice.”
Translated from Spanish by CDL Help
Muy buena practica
Google Play reviewPredators F.C
“The app helps a lot, both with learning the tests and with building vocabulary.”
Translated from Russian by CDL Help
Приложение очень сильно помагает как учить тесты так и пополнять словарный запас
Google Play reviewOleksandr S.
“A very good app, I recommend it to everyone 🔥👍🏻 Thanks to the developers 🤝🏻”
Translated from Ukrainian by CDL Help
Дуже хороший додаток, усім рекомендую 🔥👍🏻 Розробникам дякую 🤝🏻
Google Play reviewYaroslav B.
“A very good and convenient app, I recommend it to everyone!”
Translated from Russian by CDL Help
Очень хорошее и удобное приложение, всем советую!
App Store review_Dolson
“A good program for getting ready for the permit test.”
Translated from Ukrainian by CDL Help
хороша програма щоб здати на перміт.
Google Play reviewOleksandr S.
“An ideal resource for anyone preparing for the CDL permit.”
Translated from Turkish by CDL Help
CDL Permit almak isteyenler için ideal bir kaynak.
Google Play reviewMevlüt I.
“It's excellent, keep it up.”
Translated from Arabic by CDL Help
انه ممتاز تابعوا
Google Play reviewmohamed z.
“I'm preparing to take the permit test at the DMV. This app helps)”
Translated from Russian by CDL Help
Готовлюсь к сдаче тестирования на пермит в DMV. Это приложение помогает)
Google Play reviewMARAT M.
“Pretty decent for a start.”
Translated from Ukrainian by CDL Help
Досить непогано як для початку.
Google Play reviewІгор Р.
“It's very educational, it really prepares you.”
Translated from Spanish by CDL Help
Es muy educativo prepara de verdad
App Store reviewPol@nco
“Everything is laid out clearly and precisely, the update is super! I'll give it 10 stars”
Translated from Russian by CDL Help
Все чётко и ясно сложено обновление супер! Я поставлю 10 звёзд
Google Play reviewKanybek S.
“Wonderful app. Thank you”
Translated from Ukrainian by CDL Help
Чудовий додаток. Дякую
Google Play reviewzaeblozaeblozaeblo
CDL Help - Everything for a successful start in the trucking profession in the USA
Start right now - from any device, at your own pace!
Quiz to test your knowledge
Free online tests based on official CDL exams — General Knowledge, Air Brakes, Combination, and endorsements. Every answer comes with an explanation, in your language.
Start preparation
Pre-trip inspection simulator
Walk around a virtual truck and learn every part the examiner asks about, with the exam wording in English and your language. Free, right in your browser.
Try it free
Road Signs Mastery
Learn all road signs and their meanings with visual flashcards, quizzes, and a complete reference guide. The signs on the test and on the road will look familiar.
Study road signs
DOT medical exam assistance
Professional drivers in your area who can help with the exam and get you road-ready. Search by state and city to find a certified examiner near you.
Learn moreAre you ready for the CDL test? Find out in 3 questions.
Take the test simulator, find out your level. Prepare and reinforce material with our app, flashcards, quizzes.
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Practice tests by endorsement and class
Frequently Asked Questions
How many questions are on the exam?
General Knowledge - 50 questions, Air Brakes - 25 questions, Combination - 20 questions.
How many mistakes can I make?
You need to answer 80% of questions correctly to pass.
Can I take the exam without knowing English?
In some states the written knowledge test is offered in other languages (Spanish is the most common), but this varies by state and the driving test is always in English. Federal rules now require English proficiency to drive commercially, so you can study in your language but should plan to build the English you'll need.
How to get access to all tests? Is the app paid?
The app is free to start — the first section of every test is free. A subscription unlocks all 2,500+ questions, every endorsement test, and the study tools.
How many questions are in the app, and what does the subscription include?
The app has over 2,500 questions. The first section of every test is free; a subscription unlocks the rest — every test and endorsement, plus progress tracking and offline study.
Did you really add all possible questions?
We regularly update the question bank based on official DMV sources from each state.
How long does it take to prepare for the CDL exam?
Most students need 2-4 weeks of regular practice to prepare for the written CDL exam. Daily practice sessions of 30-60 minutes in our app help you learn the material and see what you still need to review.
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