Product page
Kruna
Spatial 3D chess with rotatable board worlds, complete rules, local play, a computer opponent, archive and Apple multiplayer features.
Privacy policy
Maximum privacy. Minimum data.
cgNetsphere apps are deliberately data-sparing: no ads, no tracking, no unnecessary accounts. Data stays local or, when an app offers it, in your private iCloud.
Description
Kruna
Kruna turns a chess game into a calm spatial place. A RealityKit board, weighted Staunton pieces, light, material, sound and haptics give every move presence without obscuring the position.
The tested chess core handles castling, en passant, promotion, check, mate, stalemate and relevant draw rules. Legal targets, last move, SAN move list, FEN, PGN, undo and multiple time controls are built in.
Play a local computer opponent or two-player chess on one device. Games save locally, resume reliably and enter a private archive with result, date and move sequence.
Switch between the spatial 3D board and an accessible 2D board at any time. Orbit, zoom, reset or flip the camera. Sound, haptics, assistance and reduced motion are configurable.
Kruna runs natively on iPhone, iPad, Mac and Apple TV. Game Center remote play and encrypted nearby-device control are being built; core play remains offline with no Kruna account.
Version history
Version history
Version 1.1
Current Store version · iPhone/iPad/Mac/Apple TV- Version 1.1 is published on the App Store for iPhone and iPad, Mac, and Apple TV.
- Use your iPhone as a personal controller for games against the computer on Mac, iPad, or Apple TV.
- The computer opponent is more clearly calibrated across all four levels and improved in longer-term decisions.
- Improved stability for game endings, undo, clocks, and synchronization between the board and controller.
Version 1.0
Previous Store version- Complete local chess core with computer and two-player modes.
- Spatial RealityKit board, accessible 2D board, multiple worlds, camera, sound and haptics.
- Local saving, resume, clocks, move history, PGN and a private game archive.
- Version 1.0 is published on the App Store for iPhone, iPad, Mac and Apple TV.
What is inside
What is inside
Complete chess rules
Kruna turns a chess game into a calm spatial place. A RealityKit board, weighted Staunton pieces, light, material, sound and haptics give every move presence without obscuring the position.
3D and 2D boards
The tested chess core handles castling, en passant, promotion, check, mate, stalemate and relevant draw rules. Legal targets, last move, SAN move list, FEN, PGN, undo and multiple time controls are built in.
Local and computer play
Play a local computer opponent or two-player chess on one device. Games save locally, resume reliably and enter a private archive with result, date and move sequence.
iPhone, iPad, Mac and Apple TV
Switch between the spatial 3D board and an accessible 2D board at any time. Orbit, zoom, reset or flip the camera. Sound, haptics, assistance and reduced motion are configurable.
Kruna runs natively on iPhone, iPad, Mac and Apple TV
Kruna runs natively on iPhone, iPad, Mac and Apple TV. Game Center remote play and encrypted nearby-device control are being built; core play remains offline with no Kruna account.
How it works
How it works
- 1
Start a new game and choose opponent, color, computer level, clock, assistance and board world.
- 2
Select a piece, then select one of its clearly highlighted legal destinations.
- 3
Orbit or zoom the 3D board, switch to 2D when needed and follow game status and move history.
- 4
Resume automatically, undo, share PGN or open a completed game in the local archive.
- 5
Optionally start a nearby-device session or, as it becomes available, play through your Game Center account.
Privacy and support
Privacy and support
The app has its own privacy policy. For questions, TestFlight, review notes or feedback, contact cgNetsphere directly.
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