# Mountain's Diary vs Dodoo 123

The clearest difference is price: Dodoo 123 at Free against Mountain's Diary's $0.99. Dodoo 123 also leads on iOS requirement (9.0 vs 12.0). Mountain's Diary's advantage is in-app purchases (none vs 1). On update cadence, ads and device support there is nothing between them.

Dodoo 123 is free to download; Mountain's Diary costs $0.99 up front. Dodoo 123 sells 1 one-off in-app purchase. Mountain's Diary asks for nothing beyond the download.

Mountain's Diary ships an update every 2 months, Dodoo 123 every 5 weeks. The most recent releases landed on October 5, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Mountain's Diary | Dodoo 123 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Paid | — |
| Size | 104 MB | 226 MB |
| Requires iOS | 12.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yang Zhou](https://appshunter.io/developer/1740236218) | [Yunbu Innovation](https://appshunter.io/developer/1356046616) |

## 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


### Dodoo 123

[App page](https://appshunter.io/ios/app/dodoo-123/id1494693770)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theme All | $2.99 | one-time |


## Frequently asked questions

### Is Mountain's Diary free?

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

### Is Dodoo 123 free?

Dodoo 123 is free to download, with in-app purchases available.

### Do Mountain's Diary or Dodoo 123 have ads?

Neither Mountain's Diary nor Dodoo 123 shows ads.

### Which is updated more often, Mountain's Diary or Dodoo 123?

Mountain's Diary ships an update every 2 months, and Dodoo 123 every 5 weeks. Most recently, Mountain's Diary was updated on October 5, 2026 and Dodoo 123 on October 16, 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.*