# CDL Hazmat Practice Test vs CDL Doubles Triples Prep

The clearest difference is update cadence: CDL Doubles Triples Prep at every 8 days against CDL Hazmat Practice Test's every 3 months. CDL Doubles Triples Prep also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CDL Hazmat Practice Test sells 4 in-app purchases, starting at $4.99 per 7 days and CDL Doubles Triples Prep sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

CDL Hazmat Practice Test ships an update every 3 months, CDL Doubles Triples Prep every 8 days. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | CDL Hazmat Practice Test | CDL Doubles Triples Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/cdl-hazmat-practice-test/id6469903280/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 85 MB | 25 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erdem Kara](https://appshunter.io/developer/1015700209) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### CDL Hazmat Practice Test

[App page](https://appshunter.io/ios/app/cdl-hazmat-practice-test/id6469903280)

Prepare for your CDL Hazardous Material Endorsement exam with an AI-driven learning platform. It offers over 3250 practice questions, categorized by topic, and realistic mock tests to assess your readiness. Save your progress and ensure you're well-prepared for success.

**Highlights:** Over 3250 AI-curated practice questions, Categorized topics aligned with curriculum, Realistic 25-question mock tests, AI-driven question updates, User account for progress saving, Comprehensive course and mock tests

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Weekly Subscription | $4.99 | per 7 days |
| Premium - Monthly Subscription | $14.99 | per month |
| Premium-Quarterly Subscription | $29.99 | per 3 months |
| Premium - Yearly Subscription | $49.99 | per year |


### CDL Doubles Triples Prep

[App page](https://appshunter.io/ios/app/cdl-doubles-triples-prep/id6776425892)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CDL Doubles/Triples Full Acces | $4.99 | per 7 days |
| CDL Doubles/Triples Full Acces | $12.99 | per month |
| Unlock Full Question Bank | $4.99 | one-time |
| CDL Doubles/Triples Full Acces | $39.99 | one-time |


## Frequently asked questions

### Is CDL Hazmat Practice Test free?

CDL Hazmat Practice Test is free to download, with in-app purchases available.

### Is CDL Doubles Triples Prep free?

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

### Do CDL Hazmat Practice Test or CDL Doubles Triples Prep have ads?

Neither CDL Hazmat Practice Test nor CDL Doubles Triples Prep shows ads.

### Which is updated more often, CDL Hazmat Practice Test or CDL Doubles Triples Prep?

CDL Hazmat Practice Test ships an update every 3 months, and CDL Doubles Triples Prep every 8 days. Most recently, CDL Hazmat Practice Test was updated on October 3, 2026 and CDL Doubles Triples Prep on October 7, 2026.

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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.*