# CDL Permit & Air Brakes Test — Hazmat Practice, Class A B C

> CDL practice test preparation with explained questions and progress tracking. (iPhone/iPad app by Hermes Inteligencia Digital Ltda.)

- Source: https://appshunter.io/ios/app/cdl-permit-and-air-brakes-test/id6783982693 (this page in markdown: same URL + `.md`)
- Developer: [Hermes Inteligencia Digital Ltda](https://appshunter.io/developer/1896694873)
- Category: Education, Medical
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 24 MB
- Languages: American English
- Released: 2026-07-08
- Data updated: 2026-10-24
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/cdl-permit-and-air-brakes-test/id6783982693/reviews.md

## What is CDL Permit & Air Brakes Test?

Walk into your CDL knowledge test ready. CDL Prep gives you 2,587 practice questions with a clear explanation for every single answer, so you don't just memorize the right choice - you understand why it's right and why the others are wrong. Built for new and returning commercial drivers preparing for the CDL written test at the DMV.

WHY IT WORKS
Passing isn't about cramming the manual. It's about repeated, targeted practice across every area the test covers - then reinforcing exactly what you got wrong until it sticks.

- 2,587 questions written to match the real test's style and difficulty
- An explanation on every answer, so each question teaches you something
- 15 full topics covering general knowledge and endorsements:
  Vehicle Inspection - Vehicle Control & Backing - Shifting & Transmission - Seeing & Signaling - Space Management - Speed Management - Hazard Awareness - Emergencies & Skids - Accidents, Fire & Hazmat - Cargo & Weight - Air Brakes - Combination & Coupling - Doubles, Triples & Tankers - Passenger & School Bus - Regulations & DUI

STUDY YOUR WAY
Fit prep around a full shift or a quiet weekend - your call.

- Daily Plan that sizes itself to your test date and keeps you on pace
- Quick 10 for a fast review on a break
- Timed Mode to build test-day speed and confidence
- Smart Review using spaced repetition to resurface weak spots before you forget them
- Full-Length Mock Exam that simulates the real thing end to end
- Missed Questions queue so nothing slips through
- Custom Quiz to drill any topic or endorsement on demand

PICK YOUR STATE
The CDL knowledge test is federally standardized but administered by your state DMV. Choose your state during setup so your prep reflects where you'll test.

TRACK YOUR PROGRESS
Know exactly where you stand before test day.

- Pass probability that updates as you practice
- Accuracy broken down by topic so you study what actually moves the needle
- Streaks to keep you consistent
- Test countdown that keeps the date front and center

WHO IT'S FOR
Anyone preparing for a Commercial Driver's License knowledge test - Class A, Class B, or endorsements - whether it's your first time or you're brushing up before renewal.

START TODAY
Your test date isn't moving. Start a free trial, take your first Quick 10 today, and watch your pass probability climb. Thousands of explained questions, one clear goal: pass on the first try.

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SUBSCRIPTION DETAILS
Full access is available through an auto-renewing subscription:
A free trial is available for new subscribers.

Payment will be charged to your Apple ID account at confirmation of purchase. Your subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription.

Terms of Use: https://hermesdigitalbr.github.io/cdl-legal/terms.html
Privacy Policy: https://hermesdigitalbr.github.io/cdl-legal/privacy.html

## Key features

- 2,587 practice questions
- Explanations for every answer
- 15 full topics covered
- Daily study plans
- Timed mode and mock exams
- Progress tracking and pass probability
- State-specific preparation

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly | $5.99 | per 7 days |
| Quarterly | $29.99 | per 3 months |
| Monthly | $14.99 | per month |


## Is CDL Permit & Air Brakes Test safe?

Not enough ratings yet to assess CDL Permit & Air Brakes Test.

## Is CDL Permit & Air Brakes Test legit?

CDL Permit & Air Brakes Test appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for CDL Permit & Air Brakes Test is 65 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/cdl-permit-and-air-brakes-test/id6783982693/reviews.md

### 5/5 — Made my study routine so much easier.

*2026-07-09*

The best

## Frequently asked questions about CDL Permit & Air Brakes Test

### How many practice questions does CDL Practice Test offer?

CDL Practice Test provides 2,587 practice questions designed to match the style and difficulty of the real CDL knowledge test. Each question includes a detailed explanation to help users understand the reasoning behind the correct answer.

### What topics are covered in CDL Practice Test?

The app covers 15 full topics relevant to CDL knowledge tests, including Vehicle Inspection, Hazard Awareness, Air Brakes, Hazmat, and Passenger/School Bus endorsements. It also includes general knowledge and endorsement-specific content.

### Does CDL Practice Test offer different study modes?

Yes, CDL Practice Test offers various study modes to suit different learning styles and schedules. These include a Daily Plan, Quick 10 for fast reviews, Timed Mode for building speed, Smart Review using spaced repetition, and Full-Length Mock Exams.

### How does CDL Practice Test track user progress?

The app provides detailed progress tracking, including a pass probability that updates as you practice, accuracy breakdowns by topic, streaks to encourage consistency, and a test countdown. This helps users identify weak areas and focus their study efforts.

### What is the subscription cost for CDL Practice Test?

Full access to CDL Practice Test is available through an auto-renewing subscription. Options include a weekly subscription for $5.99 and a monthly subscription for $14.99, which includes a 3-day free trial.

### Can I cancel my CDL Practice Test subscription?

Yes, you can manage and cancel your subscriptions by going to your App Store account settings after purchase. Auto-renewal can be turned off at least 24 hours before the end of the current period to avoid being charged for the next cycle.

### Is CDL Practice Test available on multiple devices?

CDL Practice Test is available for iPhone and iPad, making it accessible for users on Apple's mobile and tablet platforms. The app is designed to help users prepare for their CDL knowledge test on the go.

### Does CDL Practice Test have ads?

Based on the provided data, CDL Practice Test does not contain advertisements. The app offers a free trial and then requires a subscription for full access, indicating an ad-free experience during the paid subscription period.

## Version history (last 5 releases)

### 1.2.6 — 2026-10-22

Improved search and study experience: practice for the CDL permit, air brakes, hazmat and Class A B C endorsement tests. Bug fixes and performance improvements.

### 1.2.5 — 2026-10-21

Now with a mock exam for each section of the test.

### 1.2.4 — 2026-10-19

Stability fixes: subscription options now load more reliably.

### 1.2.3 — 2026-10-16

Housekeeping release: we cleaned up the App Store listing so the app is easier to find. The app itself is unchanged.

### 1.2.2 — 2026-09-26

New onboarding with a personalized study plan, results in two screens, a daily study log and general improvements.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*