# Mountain's Diary vs CDL Exam Expert

The clearest difference is price: CDL Exam Expert at Free against Mountain's Diary's $0.99. Mountain's Diary's advantage is in-app purchases (none vs 3) and update cadence (every 2 months vs every 7 months). On ads, device support and iOS requirement there is nothing between them.

CDL Exam Expert is free to download; Mountain's Diary costs $0.99 up front. CDL Exam Expert sells 3 in-app purchases, starting at $4.99 per month. Mountain's Diary asks for nothing beyond the download.

Mountain's Diary ships an update every 2 months, CDL Exam Expert every 7 months. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Mountain's Diary | CDL Exam Expert |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/cdl-exam-expert/id1532344145/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | **Paid** | Subscription |
| Size | 104 MB | 32 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yang Zhou](https://appshunter.io/developer/1740236218) | [Guangzhou Guang Tian Info Co., Ltd.](https://appshunter.io/developer/1181824150) |

## What reviewers say

### Mountain's Diary

[App page](https://appshunter.io/ios/app/mountains-diary/id878123330)

A children's book series that introduces nature through anthropomorphic mountains and rivers. Explore and learn about natural phenomena with fun, friendly characters.

**Highlights:** Interactive nature exploration, Anthropomorphic mountain characters, Educational content for children, Seasonal themes (spring, fall), Focus on natural phenomena

**Features:** macOS Compatibility

**In-app purchases:** none


### CDL Exam Expert

[App page](https://appshunter.io/ios/app/cdl-exam-expert/id1532344145)

Prepare for your Commercial Driver's License exam with thousands of real questions and detailed explanations. Utilize advanced learning technology for offline study and experience a realistic exam simulation to build confidence.

**Highlights:** Thousands of real exam questions, Advanced Smart Learning Technology, Offline study capability, Exam simulator, Detailed answer explanations, Quiz and Practice modes, Expert-curated learning materials

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MONTHLY | $4.99 | per month |
| 3 MONTHS | $9.99 | per 3 months |
| YEARLY | $19.99 | per year |


## Frequently asked questions

### Is Mountain's Diary free?

Mountain's Diary costs $0.99, with no in-app purchases.

### Is CDL Exam Expert free?

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

### Do Mountain's Diary or CDL Exam Expert have ads?

Neither Mountain's Diary nor CDL Exam Expert shows ads.

### Which is updated more often, Mountain's Diary or CDL Exam Expert?

Mountain's Diary ships an update every 2 months, and CDL Exam Expert every 7 months. Most recently, Mountain's Diary was updated on October 5, 2026 and CDL Exam Expert on October 17, 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.*