# CDL Prep™ vs Illinois CDL Prep Test

The clearest difference is update cadence: CDL Prep™ at every 4 days against Illinois CDL Prep Test's every 4 months. On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. CDL Prep™ sells 1 in-app purchase, starting at $5.99 per 7 days and Illinois CDL Prep Test sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CDL Prep™ holds the better App Store score, 4.9 against 4.8. Both are backed by a comparable volume of ratings — 59 and 80 respectively.

CDL Prep™ ships an update every 4 days, Illinois CDL Prep Test every 4 months. The most recent releases landed on September 29, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | CDL Prep™ | Illinois CDL Prep Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (59 ratings)](https://appshunter.io/ios/app/cdl-prep/id1541781305/reviews)** | [4.8 (80 ratings)](https://appshunter.io/ios/app/illinois-cdl-prep-test/id1668339017/reviews) |
| Number of ratings | 59 | **80** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 47 MB | 25 MB |
| Requires iOS | 14.1 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The PATG Group, Inc.](https://appshunter.io/developer/1214913266) | [Altaf Mogal](https://appshunter.io/developer/1654308061) |

## What reviewers say

### CDL Prep™

[App page](https://appshunter.io/ios/app/cdl-prep/id1541781305)

Prepare for your Commercial Driver's License (CDL) written exams with over 600 practice questions. This app covers various CDL categories and simulates the actual test format, providing immediate feedback on incorrect answers. It's designed to help you pass on your first attempt across all US states.

**Highlights:** Over 600 practice questions, Simulates actual test format, Immediate feedback on incorrect answers, Covers multiple CDL categories, Applicable for all US state exams, No registration required

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Exam Subscription | $5.99 | per 7 days |


### Illinois CDL Prep Test

[App page](https://appshunter.io/ios/app/illinois-cdl-prep-test/id1668339017)

Prepare for the Illinois Commercial Driver's License exam with this comprehensive study tool. It offers practice questions based on the official study guide, progress tracking, and the ability to bookmark difficult questions for later review. Focus your studying on areas needing the most improvement to pass your CDL exam.

**Highlights:** Practice tests based on official study guide, Progress tracking and weak question identification, Bookmark questions for later review, Detailed explanations for questions, Resume and restart tests, On-the-spot results with scores

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is CDL Prep™ free?

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

### Is Illinois CDL Prep Test free?

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

### Which has better reviews, CDL Prep™ or Illinois CDL Prep Test?

CDL Prep™ is rated higher. CDL Prep™ averages 4.9 out of 5 from 59 ratings, while Illinois CDL Prep Test averages 4.8 from 80 ratings.

### Do CDL Prep™ or Illinois CDL Prep Test have ads?

Both CDL Prep™ and Illinois CDL Prep Test show ads.

### Which is updated more often, CDL Prep™ or Illinois CDL Prep Test?

CDL Prep™ ships an update every 4 days, and Illinois CDL Prep Test every 4 months. Most recently, CDL Prep™ was updated on September 29, 2026 and Illinois CDL Prep Test on September 17, 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.*