# CDL Prep vs Illinois CDL Prep Test

The clearest difference is in-app purchases: CDL Prep at none against Illinois CDL Prep Test's 1. CDL Prep also leads on ratings volume (6.7K vs 80) and chart position (#90 vs unranked). Illinois CDL Prep Test's advantage is review sentiment (100% vs 81%) and iOS requirement (13.4 vs 15.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Illinois CDL Prep Test sells 1 one-off in-app purchase. CDL Prep asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for CDL Prep against 4.8 for Illinois CDL Prep Test. That said, the two scores are not equally well evidenced: CDL Prep has 6.7K ratings behind it against 80, so its average is the more settled of the two. Written reviews are what separate them: 81% of CDL Prep's written reviews are positive against 100% of Illinois CDL Prep Test's.

CDL Prep ships an update every 2 months, Illinois CDL Prep Test every 4 months. The most recent releases landed on September 24, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | CDL Prep | Illinois CDL Prep Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (6.7K ratings)](https://appshunter.io/ios/app/cdl-prep/id1101536521/reviews) | **[4.8 (80 ratings)](https://appshunter.io/ios/app/illinois-cdl-prep-test/id1668339017/reviews)** |
| Number of ratings | **6.7K** | 80 |
| Positive reviews | 80.7% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Best chart rank | **#90** | — |
| Size | 6 MB | 25 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeffrey Diaz](https://appshunter.io/developer/1101536520) | [Altaf Mogal](https://appshunter.io/developer/1654308061) |

## What reviewers say

### CDL Prep

[App page](https://appshunter.io/ios/app/cdl-prep/id1101536521)

**Currently charting:** #90 Top Free · Education (US App Store)

Prepare for your Commercial Drivers License exams with a comprehensive question bank covering general knowledge and various endorsements. Practice with timed exams or instant feedback modes to identify areas for improvement.

**Highlights:** Over 500 practice questions, Timed exam mode, Endorsement topic exams, Instant feedback in practice mode, Randomized answer order

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate questions
- 👍 Helpful for passing tests
- 💯 Exactly like real test
- 🙌 Great study tool
- ✅ Passed on first try

**What reviewers complain about**

- 🔍 Some questions not on app
- 🔢 Too many ads
- 🔀 Can't close ads
- 🤔 Inconsistent answers

**Reported bugs**

- Back button issues
- Incorrect answers in app

**Requested features**

- Ad-free version
- Ability to report incorrect questions
- Include state-specific requirements


### 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 no 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, CDL Prep or Illinois CDL Prep Test?

Illinois CDL Prep Test is rated higher. CDL Prep averages 4.7 out of 5 from 6.7K 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 2 months, and Illinois CDL Prep Test every 4 months. Most recently, CDL Prep was updated on September 24, 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.*