★★★★★
Average rating on the App Store. Apple doesn't publish how many ratings each star has.
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Small improvements and fixes throughout the app to keep your Sudoku sessions smooth and calm. Thanks for playing!
A premium classic Sudoku experience – no ads, no subscriptions. Raku Sudoku is designed for players who value clarity, focus, and thoughtful gameplay. Six difficulty levels from Easy to Ludicrous, including legendary 17-clue puzzles curated by mathematician Gordon Royle – the purest and most challenging grids in classic Sudoku. Pay once. Play forever. No distractions. Features · Clean, distraction-free design · Six difficulty levels — Easy to Ludicrous · Legendary 17-clue puzzles by Gordon Royle · Notes, error checking, and hints · Progress tracking and highscores · Game Center leaderboards