Comparison

California CDL Prep Test vs CDL Prep Hero

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

California CDL Prep Test

Prepare for your California Commercial Driver's License exam with this comprehensive study tool. It offers practice tests, detailed explanations, and progress tracking to help you identify and improve weak areas. Bookmark questions and review previous tests to ensure you're ready for the official exam.

Highlights
  • Practice tests based on official handbook
  • Bookmark questions for later review
  • Track progress and identify weak areas
  • Detailed explanations for questions
  • Resume and restart tests
  • Multiple choice questions with scoring
Features
Read full description

California CDL Prep Test: The California CDL Prep Test is a comprehensive study tool designed to help individuals prepare for the California Commercial Driver License (CDL) exam. This app provides users with an interactive and engaging way to study for the CDL exam. The app covers all of the key topics, including:   * Vehicle inspection * Vehicle control * Air Brakes * Hazardous Materials * Transportation of passengers   The app includes a variety of practice questions for the CDL exam. These questions are based on the California Commercial Driver handbook. Users can track their progress and identify areas where they need more practice, allowing them to focus their studying on the areas where they need the most improvement.   App tracks the users completed practice tests. The app tracks their progress, allowing them to identify areas for improvement and track their overall progress. You should be able to "bookmark" questions so that you can study them later. In addition, the app provides a list of weak questions based on practice tests on CDL Prep Test. In the California CDL Permit Practice Test, there are multiple-choice questions. You must correctly answer questions based on the passing marks or mistakes allowed for that particular test. Features: - Study and Practice tests - Driving rules - Knowledge test - Air Brakes - Combination - Bus Endorsement - Hazmat Endorsement - Double Endorsement - Tank Endorsement - Passenger Endorsement - Bookmark questions - Preview answers after the test is submitted. - Resume and Restart the test - Questions with explanation - Keep Track of Your Progress - List of Weak/Wrong Questions for Improvement - Review Previous tests - Appearance ( Auto / Light / Dark ) - Test - Result on-the-spot with score - Review test questions with answers and filter about right and wrong answers   The California CA CDL Prep Test app is user-friendly and accessible, allowing individuals to study and prepare for the California DMV CDL exam. The app aims to provide individuals with a comprehensive and convenient study resource to help them pass the CDL exam and obtain their commercial driver's license in California. Whether you are a first-time CDL candidate or a seasoned professional, this app is an essential tool for passing the California CDL exam and achieving your commercial driver's license. Content Source Our app includes a variety of practice questions for the Driver's license exam for Commercial Vehicles. These questions are based on the official handbook of different states. Disclaimer: This app is simply a fantastic tool for self-study and exam preparation. It has no affiliation with or endorsement from any government organisation, certificate, test, name, or trademark.

About

CDL Prep Hero

Prepare for your commercial driver's license knowledge tests with interactive lessons and practice questions. Features include state-specific content, mock exams, and a unique pre-trip inspection coach. Available in English and Spanish.

Highlights
  • State-specific practice tests
  • Interactive lessons with diagrams
  • Pre-trip inspection coach
  • Mock exams
  • Progress tracking
  • English and Spanish language support
Features
Read full description

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. PRE-TRIP TEST COACH Practice the Vehicle Inspection Test out loud. Name each item, point to it and explain what you're inspecting for. The coach listens, tells you what you missed and brings missed items back first. Photos and diagrams show where each part is. The front and engine section is free; the full checklist and test run come with the 90-day pass. Speech is turned into text only to check your answer; nothing you say is saved. START FREE Try the free lessons and a ten-question sample test without creating an account. FALL SPECIAL: FREE THROUGH NOVEMBER 30 Tap Unlock 90 days free on the pass screen for 90 days of full access at no cost. No payment, no sign-in. 90 DAYS OF FULL ACCESS After the Fall special, unlock the full course with one $8.99 payment for 90 days. No automatic renewal. Sign in with Apple before purchasing or restoring access. Restore using the same sign-in 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.

Screenshots

California CDL Prep Test4 screens
CDL Prep Hero4 screens

Verdict

The call

The clearest difference is rating: California CDL Prep Test at 4.7 against CDL Prep Hero's 4.0. California CDL Prep Test also leads on ratings volume (141 vs 2) and device support (3 vs 1). CDL Prep Hero's advantage is ads (none vs shown) and update cadence (every 2 days vs every 4 months). On price, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. California CDL Prep Test sells 1 one-off in-app purchase and CDL Prep Hero sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

California CDL Prep Test holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: California CDL Prep Test has 141 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

California CDL Prep Test ships an update every 4 months, CDL Prep Hero every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 3 level
California CDL Prep Test versus CDL Prep Hero: the parameters behind the verdict, then further details
ParameterCalifornia CDL Prep TestCDL Prep Hero
PriceFreeFree
Rating4.7 (141 ratings) — better4.0 (2 ratings)
Number of ratings141 — better2
Update frequencyEvery 4 monthsEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.4 — better16.4
Further details — not scored
Size25 MB73 MB
Age rating4+12+
DeveloperAltaf MogalEvergreen Comply, LLC

In-app purchases

1 purchases

California CDL Prep Test

One-time1
  • Remove Ads$4.99
1 purchases

CDL Prep Hero

One-time1
  • Full Access — 90 Days$8.99

Questions

Is California CDL Prep Test free?
California CDL Prep Test is free to download, with in-app purchases available.
Is CDL Prep Hero free?
CDL Prep Hero is free to download, with in-app purchases available.
Which has better reviews, California CDL Prep Test or CDL Prep Hero?
California CDL Prep Test is rated higher. California CDL Prep Test averages 4.7 out of 5 from 141 ratings, while CDL Prep Hero averages 4.0 from 2 ratings.
Do California CDL Prep Test or CDL Prep Hero have ads?
California CDL Prep Test shows ads; CDL Prep Hero does not.
Which is updated more often, California CDL Prep Test or CDL Prep Hero?
California CDL Prep Test ships an update every 4 months, and CDL Prep Hero every 2 days. Most recently, California CDL Prep Test was updated on November 3, 2026 and CDL Prep Hero on October 31, 2026.

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