# Chess | Shogi Clock vs 郵便番号さがし

The clearest difference is in-app purchases: Chess | Shogi Clock at none against 郵便番号さがし's 1. Chess | Shogi Clock also leads on ads (none vs shown). 郵便番号さがし's advantage is update cadence (fortnightly vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 郵便番号さがし sells 1 one-off in-app purchase. Chess | Shogi Clock asks for nothing beyond the download.

Chess | Shogi Clock ships an update every 7 months, 郵便番号さがし fortnightly. The most recent releases landed on October 15, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Chess | Shogi Clock | 郵便番号さがし |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Fortnightly** |
| Size | 7 MB | 23 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NEVER KNOWS BEST](https://appshunter.io/developer/1825162328) | [YU KORIKI](https://appshunter.io/developer/6776222963) |

## What reviewers say

### Chess | Shogi Clock

[App page](https://appshunter.io/ios/app/chess-shogi-clock/id6749825001)

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

**In-app purchases:** none


### 郵便番号さがし

[App page](https://appshunter.io/ios/app/japan-postal-code/id6808419083)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を非表示にする | $1.99 | one-time |


## Frequently asked questions

### Is Chess | Shogi Clock free?

Chess | Shogi Clock is free to download, with no in-app purchases.

### Is 郵便番号さがし free?

郵便番号さがし is free to download, with in-app purchases available.

### Do Chess | Shogi Clock or 郵便番号さがし have ads?

郵便番号さがし shows ads; Chess | Shogi Clock does not.

### Which is updated more often, Chess | Shogi Clock or 郵便番号さがし?

Chess | Shogi Clock ships an update every 7 months, and 郵便番号さがし fortnightly. Most recently, Chess | Shogi Clock was updated on October 15, 2026 and 郵便番号さがし on October 3, 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.*