# CDL DMV Written Test vs Koydo CDL Prep

The clearest difference is in-app purchases: CDL DMV Written Test at none against Koydo CDL Prep's 3. Koydo CDL Prep's advantage is ads (none vs shown) and update cadence (weekly vs monthly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Koydo CDL Prep sells 3 in-app purchases, starting at $14.99 per month. CDL DMV Written Test asks for nothing beyond the download.

CDL DMV Written Test ships an update monthly, Koydo CDL Prep weekly. The most recent releases landed on October 25, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | CDL DMV Written Test | Koydo CDL Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (1.5K ratings)](https://appshunter.io/ios/app/cdl-dmv-written-test/id6502847914/reviews)** | — |
| Number of ratings | **1.5K** | — |
| Positive reviews | 68.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 83 MB | 169 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Infinity Loop Capital LLc](https://appshunter.io/developer/1480211134) | [Robert Waltos](https://appshunter.io/developer/1886570775) |

## What reviewers say

### CDL DMV Written Test

[App page](https://appshunter.io/ios/app/cdl-dmv-written-test/id6502847914)

Prepare for your Commercial Driver's License (CDL) written test with comprehensive practice exams covering all 50 states. Master general knowledge, air brakes, and various endorsements with targeted study materials designed for efficient learning and a high success rate.

**Highlights:** State-specific practice exams, Class A & B general knowledge, Endorsement preparation (Hazmat, Bus, etc.), Updated 2026 test content, Unlimited free practice tests, No registration required

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 💡 Useful study tool
- 👍 Helpful for exams

**What reviewers complain about**

- 🐛 Inaccurate questions
- 💰 Annoying ads
- 🔍 Inability to review wrong answers

**Reported bugs**

- Unreliable for exam preparation
- Incompatible with real exam questions

**Requested features**

- Option to remove ads
- Ability to review incorrect answers


### 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 DMV Written Test free?

CDL DMV Written Test is free to download, with no in-app purchases.

### Is Koydo CDL Prep free?

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

### Do CDL DMV Written Test or Koydo CDL Prep have ads?

CDL DMV Written Test shows ads; Koydo CDL Prep does not.

### Which is updated more often, CDL DMV Written Test or Koydo CDL Prep?

CDL DMV Written Test ships an update monthly, and Koydo CDL Prep weekly. Most recently, CDL DMV Written Test was updated on October 25, 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.*