Open-source Sudoku app designed for customization and ease of use with 6x6, 9x9, and 12x12 boards, four difficulties, extensive stats, history, and the ability to create, import, and save puzzles.



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LibreSudoku is the most popular Android alternative to Hard Sudoku.
LibreSudoku is the most popular Open Source & free alternative to Hard Sudoku.
- LibreSudoku is Free and Open Source
- LibreSudoku is Privacy focused


