Showing 1–20 of 1,000 ranked alternatives.
Research and Market Insights B.V.
Play puzzles, challenge friends, track progress
Solve logic-based puzzles like , Mathdoku, and Kenken. Play unlimited puzzles without ads or subscriptions. Compete with friends via Game Center. Share puzzles and challenge others. All puzzles require logical deduction without guessing.
Quartz Games LLC
Play puzzles
Play puzzles on a 9x9 grid with pre-filled numbers. Fill the grid without repeating numbers in rows, columns, or 3x3 quadrants. Available without internet connection. No ads.
Stanley Lam
Play in five overlapping grids
Play with five overlapping 9x9 grids. Solve puzzles following standard rules. Choose from five difficulty levels and various types like Gattai and Butterfly. Use the Hint feature to auto-fill the board with non-conflicting numbers.
Boy Howdy Technology LLC
Play puzzles and track progress
Play puzzles with multiple difficulty levels. Highlight numbers for easy tracking. Solve without time limits or penalties. Share achievements and compete with friends. Customizable settings for gameplay preferences.
Fabian Zwick
Play , track progress, solve puzzles
Play with five difficulty levels and support for nine simultaneous games. Use note-taking, candidate tracking, and highlights to solve puzzles. No ads or distractions. Lock puzzles for later and sync progress across devices.
Boy Howdy Technology LLC
Play puzzles and solve grids
Play to fill the board with 9 different colors. Solve puzzles with 5 difficulty levels. Use full undo support. Mark answers or pencil marks with dual-keypad input. View beautiful graphics. No timers.
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