# CDL Prep vs NLC eBook Reader

The clearest difference is ads: NLC eBook Reader at none against CDL Prep's shown. NLC eBook Reader also leads on update cadence (every 5 weeks vs every 2 months). CDL Prep's advantage is chart position (#101 vs unranked). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CDL Prep ships an update every 2 months, NLC eBook Reader every 5 weeks. The most recent releases landed on September 24, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | CDL Prep | NLC eBook Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (6.7K ratings)](https://appshunter.io/ios/app/cdl-prep/id1101536521/reviews)** | — |
| Number of ratings | **6.7K** | — |
| Positive reviews | 80.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Ad-supported | — |
| Best chart rank | **#101** | — |
| Size | 6 MB | 76 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jeffrey Diaz](https://appshunter.io/developer/1101536520) | [Quanta Services](https://appshunter.io/developer/1449726206) |

## What reviewers say

### CDL Prep

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

**Currently charting:** #101 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


### NLC eBook Reader

[App page](https://appshunter.io/ios/app/nlc-ebook-reader/id6752949222)

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

**In-app purchases:** none


## Frequently asked questions

### Is CDL Prep free?

CDL Prep is free to download, with no in-app purchases.

### Is NLC eBook Reader free?

NLC eBook Reader is free to download, with no in-app purchases.

### Do CDL Prep or NLC eBook Reader have ads?

CDL Prep shows ads; NLC eBook Reader does not.

### Which is updated more often, CDL Prep or NLC eBook Reader?

CDL Prep ships an update every 2 months, and NLC eBook Reader every 5 weeks. Most recently, CDL Prep was updated on September 24, 2026 and NLC eBook Reader on September 15, 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.*