# RIICHI ORBIT vs 0から始める麻雀｜ずんだもんと実戦練習

The clearest difference is in-app purchases: RIICHI ORBIT at none against 0から始める麻雀｜ずんだもんと実戦練習's 2. 0から始める麻雀｜ずんだもんと実戦練習's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 0から始める麻雀｜ずんだもんと実戦練習 sells 2 in-app purchases, starting at $2.99 per month. RIICHI ORBIT asks for nothing beyond the download.

RIICHI ORBIT ships an update every 5 days, 0から始める麻雀｜ずんだもんと実戦練習 every 8 days. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | RIICHI ORBIT | 0から始める麻雀｜ずんだもんと実戦練習 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 days** | Every 8 days |
| Monetization | — | Free with in-app purchases |
| Size | 1.0 GB | 237 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shinichi Doui](https://appshunter.io/developer/1887162153) | [Keitoku Sugiyama](https://appshunter.io/developer/1891257803) |

## What reviewers say

### RIICHI ORBIT

[App page](https://appshunter.io/ios/app/riichi-orbit-mahjong/id6797684752)

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

**In-app purchases:** none


### 0から始める麻雀｜ずんだもんと実戦練習

[App page](https://appshunter.io/ios/app/0/id6816669609)

Learn the basics of Mahjong step-by-step through interactive practice and conversations with virtual characters. Start with simple exercises and gradually progress to full gameplay, focusing on essential skills without complex calculations.

**Highlights:** Learn Mahjong from scratch with virtual characters, Interactive practice with real Mahjong operations, Step-by-step progression from 5-tile to 14-tile games, Explanation of basic Mahjong rules and concepts, Focus on essential skills and efficient play, Suitable for complete beginners

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム会員 | $2.99 | per month |
| 有料機能全解放 | $5.99 | one-time |


## Frequently asked questions

### Is RIICHI ORBIT free?

RIICHI ORBIT is free to download, with no in-app purchases.

### Is 0から始める麻雀｜ずんだもんと実戦練習 free?

0から始める麻雀｜ずんだもんと実戦練習 is free to download, with in-app purchases available.

### Do RIICHI ORBIT or 0から始める麻雀｜ずんだもんと実戦練習 have ads?

Both RIICHI ORBIT and 0から始める麻雀｜ずんだもんと実戦練習 show ads.

### Which is updated more often, RIICHI ORBIT or 0から始める麻雀｜ずんだもんと実戦練習?

RIICHI ORBIT ships an update every 5 days, and 0から始める麻雀｜ずんだもんと実戦練習 every 8 days. Most recently, RIICHI ORBIT was updated on October 25, 2026 and 0から始める麻雀｜ずんだもんと実戦練習 on October 26, 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.*