27 sudoku grids interlocked in a single cube. Everything is free, with no ads and no subscription.
A classic sudoku fits on one grid. SudoKUB stacks twenty-seven.
A KUB is a 9 × 9 × 9 cube of cells. Every one of its planes — nine in each direction — is a complete, valid sudoku grid. Placing a digit constrains it in all three at once, and exactly one solution exists.
EVERYTHING IS FREE
All three modes, all five formats, every aid, both themes, VoiceOver and large text sizes. Nothing is locked behind a payment. Only the pace of new KUBs changes.
GRASP THE SPACE IN MINUTES
Three exercises take you there step by step: one grid, then a crossing, then all three families of planes. Five to eighteen minutes each, and the space is yours.
FOUR LEVELS, FOUR WAYS OF THINKING
From Easy to Expert, what changes is not how many clues you get but how deep the reasoning runs. And no level ever asks you to guess: every KUB is finished by pure deduction.
AIDS THAT SHOW, NOT SOLVE
Digit focus, cascade signalling and constraint rays let you see what you could have found yourself. All of them can be turned off.
THE KUB OF THE DAY
Every morning, a short timed KUB, the same one for everyone. Beat the target time and earn a key.
NO ADS, NO SUBSCRIPTION, NO DATA COLLECTION
No advertising. No subscription. Nothing leaves your phone apart from Game Center and the App Store. A single purchase unlocks unlimited KUBs: once, forever.
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The developer, HAZAEL BOSSON, 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 Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Larger Text
Dark Interface
Differentiate Without Color Alone
Sufficient Contrast
Reduced Motion
Information
Seller
HAZAEL BOSSON
Size
4.6 MB
Category
Puzzle
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.