# Shogi Vault - Shogi Study — AI game analysis & study notes

> Shogi study app with on-device AI game analysis and research tools. (iPhone/iPad app by takeshi maya.)

- Source: https://appshunter.io/ios/app/shogi-vault-shogi-study/id6799314216 (this page in markdown: same URL + `.md`)
- Developer: [takeshi maya](https://appshunter.io/developer/6799314218)
- Category: Games, Education, Board
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 129 MB
- Languages: American English
- Released: 2026-08-15
- Data updated: 2026-11-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/shogi-vault-shogi-study/id6799314216/reviews.md

## What is Shogi Vault?

Shogi Vault is a shogi (Japanese chess) study app for reviewing your games and building opening research with an on-device AI engine.
Note: the app's interface is in Japanese.

- AI game analysis
Import your games and analyze every move. Good moves, dubious moves and blunders are marked automatically on the move tree and the evaluation graph.

- Fully on-device AI
The YaneuraOu engine with the Suisho5 evaluation runs on your device. No network connection is needed, and positions and games are never sent out for analysis. Pro users can switch to stronger evaluation functions.

- Variation tree
Record unlimited variations from any position, compare them, add comments and pick up your research where you left off.

- Import and export
Supports KIF, KI2, CSA and SFEN, including games with variations. Imported games are sorted into folders by opening automatically.

- Tsume shogi and endgame study
Analyze tsume and hisshi problems with the on-device engine.

- Optional account sync
Sign in with Apple or email to sync settings, research and games across devices. Without signing in, all data stays on your device.

- Privacy
Only when you sign in, your email address and research/game data are stored on the server for syncing. The ad network may collect data for the rewarded ads in the AI battle screen. Usage and crash information is sent to improve the app (game and research contents are not sent; you can turn this off in Settings).

- Open-source engine
The bundled shogi engines are licensed under GPLv3. The corresponding source code of the engine integration is available at:
https://github.com/irep-takeshi-maya/shogi-vault-gpl-source

- Pro plan (auto-renewable subscription)
Monthly and yearly auto-renewable subscriptions and a one-time purchase are available. Prices are shown in the app. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and are charged to your Apple ID account. You can cancel from your Apple ID subscription settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://irep-takeshi-maya.github.io/shogi-vault-gpl-source/privacy.html

## Key features

- AI game analysis
- On-device AI engine
- Variation tree with comments
- Import/export game files
- Tsume shogi problem solver
- Optional account sync

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 将棋Vault Pro(買い切り) | $24.99 | one-time |


## Is Shogi Vault safe?

Not enough ratings yet to assess Shogi Vault.

## Is Shogi Vault legit?

Shogi Vault - Shogi Study has limited verification signals. The AppsHunter Legitimacy Score for Shogi Vault is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/shogi-vault-shogi-study/id6799314216/reviews.md

### 5/5 — チェス盤と駒の問題

*2026-10-23*

盤と駒のデザインをアップデートしていただけると嬉しいです。棋桜棋神のようなスタイルでお願いします。ありがとうございます。

## Frequently asked questions about Shogi Vault

### Does Shogi Vault have ads?

Yes, Shogi Vault contains advertisements. These may appear on the AI battle screen, and the ad network may collect data for rewarded ads.

### What languages does Shogi Vault support?

The app's interface is in Japanese. While the AI engine and game analysis are language-agnostic, users should be comfortable with a Japanese UI.

### Can I use Shogi Vault offline?

Yes, the AI game analysis and other core features run fully on-device. No network connection is needed for analysis, and your positions and games are never sent out.

### What file formats does Shogi Vault support for importing games?

Shogi Vault supports KIF, KI2, CSA, and SFEN formats, including games with variations. Imported games are automatically sorted into folders by opening.

### How does the Pro plan work in Shogi Vault?

The Pro plan is an auto-renewable subscription available monthly or yearly, with a one-time purchase option. Subscriptions renew automatically unless cancelled 24 hours before the current period ends and are charged to your Apple ID.

### Is Shogi Vault suitable for beginners?

While the app offers advanced AI analysis and research tools, its primary focus is on study and review. Beginners might find the Japanese interface and advanced features challenging without prior Shogi knowledge.

### How often is Shogi Vault updated?

The latest version is 1.15.0, last updated on November 3, 2026. Updates are released periodically to improve the app and its features.

### Can I sync my Shogi Vault data across devices?

Yes, you can optionally sign in with Apple or email to sync your settings, research, and games across devices. Without signing in, all data remains on your local device.

## Version history (last 5 releases)

### 1.15.0 — 2026-11-03

- After an AI battle, tap "Review in research" to review the game right away. The guide character points out blunders and dubious moves found by quick or deep analysis, and shows where the game turned.
- The first-run demo now opens in the "Tree & Analysis" tab, so you can try Pro real-time analysis.
- Fixed evaluation values sometimes wrapping onto two lines in the "Tree & Analysis" tab.
- Fixed the app sometimes closing when starting the AI on devices with little memory.
- Fixed a rare error when recording a completed weekly research goal.

### 1.14.0 — 2026-11-02

・研究のあと、いきなり通知の許可をお聞きするのをやめました。ホームで棋子が、どんな通知が届くかを説明してからお聞きします
・戦型ポートフォリオで、舟囲い・雁木囲い・美濃囲い・穴熊など、囲い11項目にサンプル棋譜を追加しました(Pro)
・棋書・グッズに、対局時計・マグネット将棋盤・タブレットスタンドを追加しました
・通信が遅いときに、アカウント・同期の項目が表示されないことがある不具合を直しました
・アプリの終了時や、ファイルを選ぶボタンを続けて押したときに、まれに起きていたエラーを直しました

### 1.13.0 — 2026-10-30

・はじめての方向けの案内を追加しました。先人の言葉から始まり、実戦の一局で「次の一手」を考えながらAI解析を体験できます
・案内の最後に棋力とよく指す戦型をお聞きし、その戦型の研究フォルダとサンプル棋譜を用意します(答えずに進むこともできます)
・すでにお使いの方にも、アップデート後に1度だけ案内を表示します。いつでもスキップできます
・研究画面の上に「棋譜をコピー」と「共有」のボタンを追加しました。共有は、画像(SNS向け)・KIFファイル・テキストのコピーから用途に合わせて選べます
・アプリがバックグラウンドにあるとき、まれに強制終了することがある不具合を直しました
・起動の途中で、まれにエラーになることがある不具合を直しました
・通信の安全性を高めるため、内部のライブラリを更新しました

### 1.12.0 — 2026-10-25

・ホームに「研究の記録」を追加しました。研究量の推移をグラフで、研究した日をカレンダーで見られ、週の目標と連続研究日数も分かります
・月ごとの研究をまとめた「月次レポート」を追加しました。前の月との比較や戦型別の研究量が分かり、画像で共有できます
・研究した翌日と月初に、研究の続きやレポートをお知らせします(設定でオフにできます)
・研究中の局面を画像で共有できるようにしました。評価値と最善手入りで、アプリを持っていない人もリンクから局面を見られます
・研究の節目に、案内役の棋子がひと言お祝いします
・将棋ウォーズの棋譜が途中までしか取り込まれないことがある不具合を直しました(成った駒が動く対局で起きていました)。途中で切れていた棋譜は、お手数ですが取り込み直してください
・共有から棋譜を取り込んだあと、取り込み先のフォルダに戻るようにしました

### 1.11.0 — 2026-10-22

・アプリの改善のため、利用状況(表示した画面や主な操作)とクラッシュの情報を送信するようにしました。棋譜や研究の内容、メールアドレスなどは送信しません。設定の「プライバシー」からいつでもオフにできます

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*