CDL Prep Hero
In-app purchases
Everyone
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1+
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About this app
FALL SPECIAL: FREE THROUGH NOVEMBER 30
Open the pass screen and tap Unlock 90 days free to get full access at no cost. No payment, no sign-in.
CDL Prep Hero helps you study for US commercial driver's license knowledge tests with short lessons, visual explanations and practice questions. Available in English and Spanish.
BUILD UNDERSTANDING
Learn how air brakes work, why trailers follow different paths through a turn, and the principles behind safer commercial driving. Read-aloud and animated diagrams support the lesson text.
PRACTICE FOR YOUR SUBJECTS
Choose your state, license class and endorsements. Study relevant lessons, practice questions, review missed answers, save questions for later and take mock exams. Coverage includes general knowledge, air brakes, combination vehicles, tank vehicles, hazardous materials, doubles and triples, passenger and school bus.
START FREE
Try the free lessons and a ten-question sample test without creating an account.
90 DAYS OF FULL ACCESS
Unlock the full course with one payment through Google Play for 90 days. No automatic renewal. Sign in with Google before purchasing or restoring access. Restore using the same Google Account; restoring does not restart the 90 days. An internet connection is required for account and purchase verification.
YOUR PROGRESS, ON YOUR PHONE
Track lessons, practice and mock-exam results. The readiness score summarizes study activity and performance; it does not predict or guarantee a passing result. Study progress and saved questions remain on the device and do not sync between phones.
ENGLISH OR SPANISH
Study in the language you're most comfortable with. Switch between English and Spanish at any time in Settings; your progress stays the same.
CDL Prep Hero is an independent study aid, not affiliated with a DMV, the FMCSA or the US Department of Transportation. It does not replace your state's official CDL manual, required training or official tests. Do not use the app while driving.
Open the pass screen and tap Unlock 90 days free to get full access at no cost. No payment, no sign-in.
CDL Prep Hero helps you study for US commercial driver's license knowledge tests with short lessons, visual explanations and practice questions. Available in English and Spanish.
BUILD UNDERSTANDING
Learn how air brakes work, why trailers follow different paths through a turn, and the principles behind safer commercial driving. Read-aloud and animated diagrams support the lesson text.
PRACTICE FOR YOUR SUBJECTS
Choose your state, license class and endorsements. Study relevant lessons, practice questions, review missed answers, save questions for later and take mock exams. Coverage includes general knowledge, air brakes, combination vehicles, tank vehicles, hazardous materials, doubles and triples, passenger and school bus.
START FREE
Try the free lessons and a ten-question sample test without creating an account.
90 DAYS OF FULL ACCESS
Unlock the full course with one payment through Google Play for 90 days. No automatic renewal. Sign in with Google before purchasing or restoring access. Restore using the same Google Account; restoring does not restart the 90 days. An internet connection is required for account and purchase verification.
YOUR PROGRESS, ON YOUR PHONE
Track lessons, practice and mock-exam results. The readiness score summarizes study activity and performance; it does not predict or guarantee a passing result. Study progress and saved questions remain on the device and do not sync between phones.
ENGLISH OR SPANISH
Study in the language you're most comfortable with. Switch between English and Spanish at any time in Settings; your progress stays the same.
CDL Prep Hero is an independent study aid, not affiliated with a DMV, the FMCSA or the US Department of Transportation. It does not replace your state's official CDL manual, required training or official tests. Do not use the app while driving.
FREE through Nov 30: CDL permit practice tests, lessons and mock exams.
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
Fall special: full access is free through November 30. Tap Unlock 90 days free on the pass screen. No payment, no sign-in.
• Setup is clearer: the instructor or school question has its own step.
• New installs get the latest improvements on first launch.
• Setup is clearer: the instructor or school question has its own step.
• New installs get the latest improvements on first launch.
App support
phone
Phone number
+19709190034
About the developer
Evergreen Comply LLC
support@evergreencomply.com
10329 Palms Blvd APT 505
Los Angeles, CA 90034-4896
United States
+1 970-919-0034