# CDL Study vs Koydo CDL Prep

The clearest difference is update cadence: Koydo CDL Prep at weekly against CDL Study's every 4 months. CDL Study's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CDL Study sells 2 in-app purchases, starting at $19.99 per month and Koydo CDL Prep sells 3 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

CDL Study ships an update every 4 months, Koydo CDL Prep weekly. The most recent releases landed on October 13, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | CDL Study | Koydo CDL Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (2K ratings)](https://appshunter.io/ios/app/cdl-study-practice-test-2026/id1447718378/reviews)** | — |
| Number of ratings | **2K** | — |
| Positive reviews | 55.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 47 MB | 169 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Adrian Del Jesus Sanchez Mendez](https://appshunter.io/developer/1443887258) | [Robert Waltos](https://appshunter.io/developer/1886570775) |

## What reviewers say

### CDL Study

[App page](https://appshunter.io/ios/app/cdl-study-practice-test-2026/id1447718378)

Prepare for your Commercial Driver's License exam with state-specific practice tests and over 2,000 questions. Master endorsements, track your progress, and study offline to pass on your first attempt.

**Highlights:** 2,000+ state-specific questions, HazMat and endorsement coverage, Smart progress tracking, Unlimited exam simulators, Offline mode, English & Español support

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $19.99 | per month |
| CDL Study Premium | $71.90 | one-time |

**What reviewers like**

- 🚀 Helpful for studying and preparing for exams
- 👍 Easy to use and understand
- 👍 Comprehensive content coverage
- 👍 Useful for passing the permit test

**What reviewers complain about**

- 🐛 Incorrect answers marked as wrong
- 🐛 Questions don't match the answers
- 🐛 Poorly worded questions
- 🤬 Subscription cancellation issues
- 🤬 Intrusive ads that can't be closed

**Reported bugs**

- Incorrect answers marked as wrong
- Questions not matching the answers
- Poorly worded questions
- Subscription cancellation issues
- Intrusive ads that can't be closed

**Requested features**

- Improve accuracy of questions and answers
- Enhance user interface and experience
- Provide better subscription management options
- Optimize ad placement and frequency


### Koydo CDL Prep

[App page](https://appshunter.io/ios/app/koydo-cdl-prep/id6763954374)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Koydo CDL Monthly | $14.99 | per month |
| Koydo CDL 6-Month | $24.99 | per 6 months |
| Koydo CDL Annual | $34.99 | per year |


## Frequently asked questions

### Is CDL Study free?

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

### Is Koydo CDL Prep free?

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

### Do CDL Study or Koydo CDL Prep have ads?

Neither CDL Study nor Koydo CDL Prep shows ads.

### Which is updated more often, CDL Study or Koydo CDL Prep?

CDL Study ships an update every 4 months, and Koydo CDL Prep weekly. Most recently, CDL Study was updated on October 13, 2026 and Koydo CDL Prep on September 28, 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.*