CDL Permit Prep vs CDL Audible
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CDL Permit Prep
Prepare for your Commercial Driver's License (CDL) exam with a comprehensive question bank covering general knowledge, specific endorsements, and pre-trip inspections. Review explanations and source references for each answer to deepen your understanding.
- 1,316 practice questions
- National and state-specific topics
- Explanations and source references
- Pre-trip inspection trainer
- Study by CDL class and endorsement
- Review missed questions
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Study commercial learner's permit and CDL knowledge topics with CDL Permit Prep. The app's question bank contains 1,310 multiple-choice practice questions: 943 with national scope and 367 focused on state-specific topics. These are counts in the app, not the length or question count of any state's exam. Topics include General Knowledge, Air Brakes, Combination Vehicles, Hazmat, Tanker, Doubles/Triples, Passenger, School Bus, Hours of Service, and Pre-Trip Inspection. REVIEW QUESTIONS AND SOURCES Read an explanation after each answer and open its source reference. Study the federal topics and state-specific material included in the app, then check your state's current CDL manual and licensing-agency guidance for requirements that apply to you. PRACTICE YOUR PRE-TRIP CHECKS Use the trainer to identify vehicle components, describe the checks you would make, and explain safety concerns. Follow your state's current CDL manual and test instructions. The trainer does not require a script; examples are optional prompts, so use your own words. Trainer feedback is for practice and is not an official test score. STUDY BY CDL CLASS AND ENDORSEMENT Choose the class and topics you want to study. Review missed questions and practice the included CDL subjects at your own pace. Some CDL question translations are still under review and may appear in English with a notice. This app is study material, not an ELDT course and not a substitute for training required by FMCSA rules. Practice is not the exam. Check your state's current commercial driver handbook and official licensing-agency information. For support, visit https://cdlpermitprep.org/support. CDL Permit Prep is an independent study product and is not an official licensing-agency service.
CDL Audible
Prepare for your Commercial Driver's License (CDL) knowledge test with narrated lessons and practice exams. Study hands-free, offline, and track your progress to pass your DMV exam.
- Narrated CDL lessons
- Hands-free study mode
- Offline access
- Real practice exams
- Unlimited quizzes
- Progress tracking
- Missed-question review
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Pass your CDL knowledge test the way real drivers actually study for it — narrated, hands-free, and built around the exact tests the DMV gives you. CDL Audible turns the commercial driver's license course into something you can listen to. Every lesson is narrated start to finish, so you can study in the cab, on a walk, or anywhere sitting down with a book isn't practical. WHAT'S INSIDE • General Knowledge, Air Brakes, and Combination Vehicles — the core tests every CDL applicant needs • Full narration of every lesson, not just summaries • Real practice exams matched to actual DMV question counts and passing scores (50 questions/80% for General Knowledge, 25/80% for Air Brakes, 20/80% for Combination Vehicles) • Unlimited practice quizzes with instant feedback and explanations • Missed-question review that links straight back to the lesson that covers it • Progress tracking across every topic, so you know what's actually ready • Class B and C drivers can turn off Air Brakes and Combination Vehicles if they don't apply STUDY YOUR WAY Read at your own pace, or switch to listener mode and let CDL Audible narrate while you drive, walk, or wait. Adjustable playback speed, lock-screen controls, and background playback mean the lesson keeps going even when your phone doesn't have your full attention. NO SIGNAL, NO PROBLEM Every lesson and all nine hours of narration are built into the app — nothing to download, no account to make, and no connection needed. Made for studying where cell service doesn't reach. FREE TO START The app is free, and it opens with a 10-minute trial of everything, no card needed. Reading the lessons, every quiz, and every practice exam stay free and unlimited after that, with no cap on retakes. PLANS • Reading Mode — $9.99 every 3 months: every lesson to read, every quiz and practice exam in full, progress tracking, and a 60-second narration preview of each lesson. Supported by ads. • Audible Mode — $19.99 every 3 months: everything in Reading Mode, plus complete narration of all 93 lessons, hands-free spoken quizzes, the repeat-lesson loop, lock-screen and background playback — and no ads anywhere. You can move from Reading Mode up to Audible Mode at any time, and cancel either one whenever you like. Whether you're chasing your Class A, B, or C license, CDL Audible is built to get you into the truck faster. Payment is charged to your Apple ID at confirmation of purchase. Each plan renews automatically every 3 months unless it is cancelled at least 24 hours before the end of the current period; manage or cancel any time in your Account Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.earnack.com/cdl-audible/privacy
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Verdict
The clearest difference is in-app purchases: CDL Permit Prep at none against CDL Audible's 2. CDL Permit Prep also leads on ads (none vs shown). CDL Audible's advantage is iOS requirement (16.4 vs 26.0). On price, rating, ratings volume and device support 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
Both are free to download. CDL Audible sells 2 in-app purchases, starting at $9.99 per 3 months. CDL Permit Prep asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for CDL Permit Prep against 5.0 for CDL Audible. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
| Parameter | CDL Permit Prep | CDL Audible |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 3 days | — |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 99 MB | 197 MB |
| Age rating | 4+ | 12+ |
| Developer | Surabhi Agnihotri | EarnAck LLC |
Customer experience
CDL Permit Prep
CDL Audible
In-app purchases
CDL Permit Prep
No in-app purchases
CDL Audible
- Reading Mode$9.993 Months
- Audible Mode$19.993 Months





