# California CDL Test Prep vs Illinois CDL Prep Test

The clearest difference is price: Illinois CDL Prep Test at Free against California CDL Test Prep's $12.99. Illinois CDL Prep Test also leads on review sentiment (100% vs 56%) and update cadence (every 4 months vs every 11 months). California CDL Test Prep's advantage is ads (none vs shown). On rating, ratings volume, in-app purchases and monetization model there is nothing between them.

Illinois CDL Prep Test is free to download; California CDL Test Prep costs $12.99 up front. California CDL Test Prep sells 4 one-off in-app purchases and Illinois CDL Prep Test sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for California CDL Test Prep against 4.8 for Illinois CDL Prep Test. Both are backed by a comparable volume of ratings — 106 and 80 respectively. Written reviews are what separate them: 56% of California CDL Test Prep's written reviews are positive against 100% of Illinois CDL Prep Test's.

California CDL Test Prep ships an update every 11 months, Illinois CDL Prep Test every 4 months. The most recent releases landed on September 17, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | California CDL Test Prep | Illinois CDL Prep Test |
| --- | --- | --- |
| Price | $12.99 | **Free** |
| Rating | [4.7 (106 ratings)](https://appshunter.io/ios/app/california-cdl-test-prep/id556776023/reviews) | **[4.8 (80 ratings)](https://appshunter.io/ios/app/illinois-cdl-prep-test/id1668339017/reviews)** |
| Number of ratings | **106** | 80 |
| Positive reviews | 56.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 34 MB | 25 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Kelvin Beecroft](https://appshunter.io/developer/301291170) | [Altaf Mogal](https://appshunter.io/developer/1654308061) |

## What reviewers say

### California CDL Test Prep

[App page](https://appshunter.io/ios/app/california-cdl-test-prep/id556776023)

Prepare for your California Commercial Driver License (CDL) written exam with over 580 practice questions covering various topics. Includes study aids like road signs and the official manual, with cheat sheets for key sections. Offers immediate feedback and explanations for practice questions.

**Highlights:** 580+ practice questions, Road signs included, California CDL Manual, Topic-specific sections, Printable cheat sheets, Immediate answer checking, Bookmarking questions

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Air Brakes Cheat Sheet | Free | one-time |
| Cargo Cheat Sheet | Free | one-time |
| Passenger Cheat Sheet | Free | one-time |
| School Bus Cheat Sheet | Free | one-time |


### 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 California CDL Test Prep free?

California CDL Test Prep costs $12.99, and also offers in-app purchases.

### Is Illinois CDL Prep Test free?

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

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

Illinois CDL Prep Test is rated higher. California CDL Test Prep averages 4.7 out of 5 from 106 ratings, while Illinois CDL Prep Test averages 4.8 from 80 ratings.

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

Illinois CDL Prep Test shows ads; California CDL Test Prep does not.

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

California CDL Test Prep ships an update every 11 months, and Illinois CDL Prep Test every 4 months. Most recently, California CDL Test Prep was updated on September 17, 2026 and Illinois CDL Prep Test on September 3, 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.*