# Mahjong Skill Builder vs おっかない牌

The clearest difference is in-app purchases: おっかない牌 at none against Mahjong Skill Builder's 2. おっかない牌 also leads on ads (none vs shown). Mahjong Skill Builder's advantage is iOS requirement (15.1 vs 17.0). On price 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. おっかない牌 asks for nothing beyond the download.

## The numbers

| Metric | Mahjong Skill Builder | おっかない牌 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 44 MB | 5 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Keita Ide](https://appshunter.io/developer/1804599366) | [Ryo Takaoka](https://appshunter.io/developer/1798086367) |

## What reviewers say

### 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 |


### おっかない牌

[App page](https://appshunter.io/ios/app/id6762544982)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mahjong Skill Builder free?

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

### Is おっかない牌 free?

おっかない牌 is free to download, with no in-app purchases.

### Do Mahjong Skill Builder or おっかない牌 have ads?

Mahjong Skill Builder shows ads; おっかない牌 does not.

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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.*