Kyu Sudoku
Kyu Sudoku
A calm, paper-textured sudoku for iPhone. Solve the day's puzzle before anyone you know, climb a quiet ladder of rank, and keep your data to yourself.
Download on the App StoreOne board a day, generated once and shared by every player. Solve it against the clock, keep a streak alive, and see where you land on the public leaderboard — ranked by time, not by luck. Miss a day and the streak resets; that's the whole stakes.
Everyone gets the identical puzzle, reset at midnight. No difficulty picking — just today's board, same as it is for every other player.
Ranked by solve time. Top-three finishers wear a mark next to their name that everyone else can see.
The number that matters is consecutive days, not points. No hints in this mode — it stays fair for everyone chasing the same streak.
Four difficulties from Easy to Expert, at your own pace. Stuck? Free hints are yours by default — set the dial from zero to two in Settings, or top off with three bonus hints per puzzle.
Four difficulties, and a clock you can hide if it makes you rush. Three mistakes ends a grid; take one second chance and the run still counts toward your best time, stats and badges.
A free-hint dial from zero to two in Settings, plus up to three bonus hints per puzzle — earn each with a short rewarded ad, or unlock them all with Kyu Supporter.
A one-time $4.99: all three bonus hints on every puzzle and free second chances, forever, no ads, plus a small mark on your profile. It buys convenience, never a win — the Daily Challenge stays free of hints and second chances for everyone regardless.
Kyū (級) is the grading system martial arts and go use on the way up, before dan rank. Kyu Sudoku keeps 27 flower badges across nine paths: how many puzzles you've solved, how long you've kept a streak, how many Daily Challenges you've finished, how hard a board you've mastered, how many you've finished without a mistake or without a hint, whether you've swept all four dailies in a day, and how high you've placed, today and all-time.