Free
In-App Purchases
About
Engage in real-time Sudoku battles against friends or other players on a shared grid. Strategize to claim squares first, build streaks, and climb the competitive leagues. Enjoy a completely ad-free experience with optional cosmetic purchases.
✓Live multiplayer Sudoku races
✓Shared puzzle grid with real-time updates
✓Streak multipliers and bonus cells
✓Solo play with adjustable difficulty
✓Weekly competitive leagues
✓In-game chat and friend challenges
✓Cross-platform play
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What's New in Kosudoku
1.7.17
November 15, 2026
Kyuboku 3D: the slices are now bigger while you play, with a compact cube above them so there's more room for the numbers. Kyuboku 9³: the 3D cube now tilts the natural way when you drag up and down. Bug fixes and improvements.
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Subscriptions & In-App Purchases
$0.99
10 Quickets
Adds 10 Quickets to your balance.
User reviews
FAQ
How does Kosudoku multiplayer work?
Kosudoku features real-time Sudoku races where you and your opponents solve the same puzzle simultaneously on a shared grid. The first player to solve a square claims it, and their moves appear instantly on others' screens.
Does Kosudoku have ads?
No, Kosudoku is completely ad-free. The developers state it has never shown and never will show any advertisements, ensuring an uninterrupted gameplay experience.
Can I play Kosudoku offline?
The description focuses on live multiplayer and competitive leagues, suggesting an internet connection is required for these modes. Solo play might be available offline, but this is not explicitly stated.
What are Quickets in Kosudoku?
Quickets are an in-game currency that can be earned through wins, streaks, and daily rewards, or purchased with real money. They can be used in the store to buy cosmetic items like board skins, themes, fonts, and player colors.
How do the leagues in Kosudoku work?
Kosudoku features weekly league groups of up to 20 players. Players compete for rank, with top performers being promoted and lower performers potentially dropping to lower leagues, ranging from Bronze to Grandmaster.
Is Kosudoku available on all devices?
Kosudoku is fully cross-platform, meaning you can challenge friends and compete in the same live matches, leagues, and leaderboards regardless of the device they use. It is currently supported on iPhone and iPad.
What is the age rating for Kosudoku?
Kosudoku has an age rating of 12+, indicating it is suitable for players aged 12 and older.
How often is Kosudoku updated?
The latest version of Kosudoku is 1.7.15, and it was last updated on November 12, 2026. This indicates a relatively active development cycle.
