# KeyItem vs Flush Mahjong Quiz

The clearest difference is price: KeyItem at Free against Flush Mahjong Quiz's $0.99. KeyItem also leads on in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

KeyItem is free to download; Flush Mahjong Quiz costs $0.99 up front. Flush Mahjong Quiz sells 1 in-app purchase, starting at $0.49 per month. KeyItem asks for nothing beyond the download.

KeyItem ships an update every 11 days, Flush Mahjong Quiz weekly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | KeyItem | Flush Mahjong Quiz |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 days | **Weekly** |
| Size | 979 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YUL Foundation](https://appshunter.io/developer/1809368563) | [Yohei Tamura](https://appshunter.io/developer/1713180514) |

## What reviewers say

### KeyItem

[App page](https://appshunter.io/ios/app/keyitem/id6467468587)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flush Mahjong Quiz

[App page](https://appshunter.io/ios/app/flush-mahjong-quiz/id6473065449)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $0.49 | per month |


## Frequently asked questions

### Is KeyItem free?

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

### Is Flush Mahjong Quiz free?

Flush Mahjong Quiz costs $0.99, and also offers in-app purchases.

### Do KeyItem or Flush Mahjong Quiz have ads?

Flush Mahjong Quiz shows ads; KeyItem does not.

### Which is updated more often, KeyItem or Flush Mahjong Quiz?

KeyItem ships an update every 11 days, and Flush Mahjong Quiz weekly. Most recently, KeyItem was updated on November 3, 2026 and Flush Mahjong Quiz on November 4, 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.*