Shogi Vault vs Shogi Analysis

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

Review your shogi games with a real engine, right on your phone. Paste a KIF from Shogi Wars, Shogi Quest or anywhere else and get win-rate graphs, best moves and lines, move by move as the analysis arrives. ■ NO WAITING • Positions are analyzed in parallel and results appear move by move, so you can start right away. A full game takes about 10 seconds (~100 moves; varies with length and connection) ■ MISSED MATES BECOME TSUME PUZZLES • Mates of up to 7 moves you missed become puzzles you play out to checkmate against the toughest defense • Missed mates of 9+ moves and blunders become next-move problems ■ "WHAT IF…?" TRY A MOVE • Move a piece on the analysis board to see its win rate and the top 3 replies, then keep playing out the line ■ PLAY THE ENGINE FROM ANY POSITION • Tap "Play from here" in Analysis to take your side and play the game out against the engine. Pick the opponent's strength by rank; while you follow the actual game, it replies with the actual moves • Win rate and evaluation stay visible as you play. Stuck? "Show best move" reveals the answer, and you can undo • Finished games are saved and analyzed like any other. Checks and mates appear in brush lettering, with a sound and a light tap when a piece lands ■ YOUR OWN PROBLEM SET • Built only from clear mistakes: a win thrown away, a missed mate, missed material, or a big blunder • Auto practice serves your newest problems first, with no daily limit, or browse by length or situation • Answer on the board, with hints, then compare win rates with the best move (e.g. 61% → 38%) • Mark problems Mastered or Review again. Ones you miss come back after 1, 3, 8 and 30 days ■ GAME ANALYSIS • Win-rate graph, top 3 candidates with win rates, and the best move as an arrow with a replayable line • The best move's aim in words ("Aims to check and win the rook") and mate lengths ("Mate in 7") • Key points flag forks, skewers, discovered checks, threatmates and more • A mark (◎ ○ △ ×) shows whether the last move matched the best move • Game list with mini win-rate graphs, blunder markers and openings, filterable by opening • Western (P-76) or Japanese notation, and Light, Dark or system appearance ■ EASY TO START • Free to start, with no sign-up or email needed (free plan: analyze 3 games, try moves in 3 games and play 3 games a day) • Paste a game record, pick a file, or import via Share. Add several games at once • Shogi Wars and Shogi Quest game links import directly. KIF files from Lishogi and 81Dojo work too • No player names? Just pick Sente or Gote. Mid-game starts work, and a position without moves (diagram or SFEN) can become a mate problem ■ GOOD TO KNOW • Formats: KIF, KI2 and CSA (plus USI/SFEN and JKF) • Adding and analyzing games needs a connection; problems can be solved offline • Delete your account and its data from the Account screen. An optional email lets you restore it on a new phone ■ PREMIUM (AUTO-RENEWING SUBSCRIPTION) • Unlimited game analysis, what-if moves and games against the engine, plus longer candidate lines (bulk automated use may be limited) • Monthly or yearly plan; prices are shown in your local currency in the app and on the App Store before you buy. 7-day free trial for new subscribers • Payment is charged to your Apple Account when the free trial ends (or at purchase if you aren't eligible). The plan renews automatically each month or year unless canceled at least 24 hours before the period ends • Cancel anytime in Settings → your Apple Account → Subscriptions. Deleting your app account doesn't cancel the subscription Analysis is powered by YaneuraOu with the Suisho 5 evaluation function. Service names mentioned are trademarks of their respective owners. Shogi Analysis is not an official app of, or affiliated with, these services. Terms of Use (in Japanese): https://shogi-ai.jp/terms/ EULA (Apple standard): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://shogi-ai.jp/en/privacy/