Shogi Lab: Sunfish Engine

Engine Analysis & Match

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

This is a shogi app powered by the full-featured Sunfish4 engine. With clear piece design and calm, intuitive controls, you can enjoy smooth gameplay from the opening to the endgame. It includes real-time evaluation during matches as well as game record replay and analysis features, allowing you to complete the entire flow from playing to reviewing within the app. Online matches with rankings are supported, and offline CPU matches are also available. Main Features ▪ In-Game Analysis (During Match) ・View evaluation values and graphs in real time. ▪ Thinking Time Visualization (During Match) ・Display thinking time on the move list. ・Long thinks are highlighted in red (top 5%) and yellow (top 15%). ▪ Key Move Detection (During Match / Analysis) ・Automatically highlights moves where the evaluation changes significantly. ▪ Game Record Analysis (Analysis) ・Replay, fast-forward, and rewind past games for review. ・Import KIF and CSA files for replay and analysis. ▪ Position Jump (Analysis) ・Instantly move to any position within the game record. ▪ Save & Resume (During Match) ・Pause a match and resume later. ▪ Adjustable CPU Strength (During Match) ・Set the difficulty level from practice to serious play. ▪ First/Second Move Selection (Start) ・Choose to play as Black or White. ▪ Take Back Move (During Match) ・Undo the last move. ▪ Legal Move Display (During Match) ・Show available moves to help prevent mistakes. ▪ Haptics & Animations (Controls) ・Smooth and responsive interaction. ▪ Online Multiplayer ・Supports ranked online matches. ・Offline CPU matches and local two-player mode are also available.

Ratings & Reviews

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- Added support for importing KIF / CSA game record files - Added replay and analysis support for imported game records - Adjusted parts of the UI - Fixed minor issues

Version 2.0.4

The developer, koji ozono, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • koji ozono
Size
  • 81.4 MB
Category
  • Board
Compatibility
Requires iOS 17.6 or later.
  • iPhone
    Requires iOS 17.6 or later.
  • iPad
    Requires iPadOS 17.6 or later.
  • Mac
    Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.3 or later.
Languages
  • English and Japanese
Age Rating
4+
In-App Purchases
Yes
Copyright
  • ©2026 Koji Ozono
  • Developer Website
  • Privacy Policy
  • License Agreement

    • More by koji ozono