# Shogi Lab vs 将棋Arena

The clearest difference is in-app purchases: 将棋Arena at none against Shogi Lab's 1. Shogi Lab's advantage is update cadence (every 3 days vs weekly) and iOS requirement (17.6 vs 26.5). On price, ads and device support there is nothing between them.

Both are free to download. Shogi Lab sells 1 one-off in-app purchase. 将棋Arena asks for nothing beyond the download.

Shogi Lab ships an update every 3 days, 将棋Arena weekly. The most recent releases landed on October 28, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Shogi Lab | 将棋Arena |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 82 MB | 18 MB |
| Requires iOS | **17.6** | 26.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [koji ozono](https://appshunter.io/developer/1826482515) | [Kei Suzumura](https://appshunter.io/developer/6798523401) |

## What reviewers say

### Shogi Lab

[App page](https://appshunter.io/ios/app/shogi-lab-sunfish-engine/id6757245157)

This shogi app offers a full-featured engine for analysis and gameplay. Enjoy intuitive controls, real-time evaluation during matches, and comprehensive game record replay. Play online with rankings or offline against adjustable CPU opponents.

**Highlights:** In-game analysis with real-time evaluation, Thinking time visualization, Key move detection, Game record replay and analysis, Online ranked matches, Adjustable CPU strength, Save and resume matches

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shogi Lab Pro | $1.99 | one-time |


### 将棋Arena

[App page](https://appshunter.io/ios/app/arena/id6809158260)

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

**In-app purchases:** none


## Frequently asked questions

### Is Shogi Lab free?

Shogi Lab is free to download, with in-app purchases available.

### Is 将棋Arena free?

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

### Do Shogi Lab or 将棋Arena have ads?

Both Shogi Lab and 将棋Arena show ads.

### Which is updated more often, Shogi Lab or 将棋Arena?

Shogi Lab ships an update every 3 days, and 将棋Arena weekly. Most recently, Shogi Lab was updated on October 28, 2026 and 将棋Arena on October 29, 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.*