# 100ゲーム vs Mahjong Skill Builder

The clearest difference is in-app purchases: 100ゲーム at none against Mahjong Skill Builder's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Mahjong Skill Builder sells 2 in-app purchases, starting at $0.99 per month. 100ゲーム asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 100ゲーム | Mahjong Skill Builder |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 43 MB | 44 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [reo kawata](https://appshunter.io/developer/1870835431) | [Keita Ide](https://appshunter.io/developer/1804599366) |

## What reviewers say

### 100ゲーム

[App page](https://appshunter.io/ios/app/100/id6758097670)

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

**In-app purchases:** none


### Mahjong Skill Builder

[App page](https://appshunter.io/ios/app/mahjong-skill-builder/id6759558674)

Master Mahjong scoring with structured practice. Learn to identify yaku, calculate han and fu, and determine final scores through five progressive training modes. Track your progress and improve your game with realistic hands and quick, randomized sessions.

**Highlights:** Master Mahjong scoring, Learn yaku and han values, Calculate fu and final points, Five progressive training modes, Realistic hand scenarios, Progress tracking and feedback, Quick, randomized sessions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skill Builder Premium Monthly | $0.99 | per month |
| Skill Builder Premium Yearly | $9.99 | per year |


## Frequently asked questions

### Is 100ゲーム free?

100ゲーム is free to download, with no in-app purchases.

### Is Mahjong Skill Builder free?

Mahjong Skill Builder is free to download, with in-app purchases available.

### Do 100ゲーム or Mahjong Skill Builder have ads?

Both 100ゲーム and Mahjong Skill Builder show ads.

### Which is updated more often, 100ゲーム or Mahjong Skill Builder?

100ゲーム ships an update every 5 days, and Mahjong Skill Builder every 5 days. Most recently, 100ゲーム was updated on October 25, 2026 and Mahjong Skill Builder on October 24, 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.*