# CDL HazMat vs CDL Prep App

The clearest difference is in-app purchases: CDL HazMat at none against CDL Prep App's 3. CDL HazMat also leads on iOS requirement (13.0 vs 17.0). CDL Prep App's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. CDL Prep App sells 3 in-app purchases, starting at $5.99 per 7 days. CDL HazMat asks for nothing beyond the download.

## The numbers

| Metric | CDL HazMat | CDL Prep App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (3 ratings)](https://appshunter.io/ios/app/cdl-prep-app-practice/id6787347422/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | — |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 24 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [Mert Demir](https://appshunter.io/developer/1864769723) | [Syed Sahib Sultan](https://appshunter.io/developer/1772841767) |

## What reviewers say

### CDL HazMat

[App page](https://appshunter.io/ios/app/cdl-hazmat-audio-prep-2026/id6758774591)

**Features:** macOS Compatibility

**In-app purchases:** none


### CDL Prep App

[App page](https://appshunter.io/ios/app/cdl-prep-app-practice/id6787347422)

Prepare for your commercial driver's license exam with over 2,600 practice questions and a realistic exam simulator. Study all required sections, including General Knowledge, Air Brakes, and HazMat, at your own pace. Access full study guides and books within the app for comprehensive preparation.

**Highlights:** 2,600+ practice questions, Realistic exam simulator, Covers all CDL sections, Includes full CDL books, Study at your own pace, Progress tracking

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CDL Pro Weekly | $5.99 | per 7 days |
| CDL Pro Monthly | $12.99 | per month |
| CDL Pro Yearly - Best Value | $34.99 | per year |


## Frequently asked questions

### Is CDL HazMat free?

CDL HazMat is free to download, with no in-app purchases.

### Is CDL Prep App free?

CDL Prep App is free to download, with in-app purchases available.

### Do CDL HazMat or CDL Prep App have ads?

CDL HazMat shows ads; CDL Prep App does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*