# SD CDL Prep Test vs CDL Prep

The clearest difference is ads: CDL Prep at none against SD CDL Prep Test's shown. SD CDL Prep Test's advantage is iOS requirement (13.4 vs 15.1). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. SD CDL Prep Test sells 1 one-off in-app purchase and CDL Prep sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for SD CDL Prep Test against 5.0 for CDL Prep. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

SD CDL Prep Test ships an update every 4 months, CDL Prep every 3 months. The most recent releases landed on September 15, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SD CDL Prep Test | CDL Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/sd-cdl-prep-test/id1668949026/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/cdl-prep-permit-practice/id6783530721/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 25 MB | 51 MB |
| Requires iOS | **13.4** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Altaf Mogal](https://appshunter.io/developer/1654308061) | [MD Teknoloji Bilisim ve Ticaret Anonim Sirketi](https://appshunter.io/developer/1802639207) |

## What reviewers say

### SD CDL Prep Test

[App page](https://appshunter.io/ios/app/sd-cdl-prep-test/id1668949026)

Prepare for your South Dakota Commercial Driver's License exam with this comprehensive study tool. It offers interactive practice tests covering all key topics, progress tracking, and detailed explanations to help you identify areas for improvement and pass your CDL exam.

**Highlights:** Comprehensive study material, Interactive practice tests, Progress tracking and analysis, Bookmarking of questions, Detailed question explanations, Resume and restart tests, Weak/wrong question review

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### CDL Prep

[App page](https://appshunter.io/ios/app/cdl-prep-permit-practice/id6783530721)

Prepare for your Commercial Driver's License (CDL) permit tests with over 900 practice questions and detailed explanations. The app offers timed exams, mistake review, and state-specific handbooks, with translation support for multiple languages.

**Highlights:** 907 practice questions, Clear explanations for each question, Timed practice exams, Mistake review feature, State-specific handbooks, Progress tracking by topic, Offline functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CDL Pro | $9.99 | per month |


## Frequently asked questions

### Is SD CDL Prep Test free?

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

### Is CDL Prep free?

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

### Which has better reviews, SD CDL Prep Test or CDL Prep?

SD CDL Prep Test and CDL Prep are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do SD CDL Prep Test or CDL Prep have ads?

SD CDL Prep Test shows ads; CDL Prep does not.

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

SD CDL Prep Test ships an update every 4 months, and CDL Prep every 3 months. Most recently, SD CDL Prep Test was updated on September 15, 2026 and CDL Prep on September 29, 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.*