Vibidoku — Sudoku Puzzles

vibidoku is Sudoku done right — clean, fast, and built to play. Whether you want a quick 4×4 to warm up or a brain-melting 16×16, every puzzle is generated fresh with exactly one solution. No accounts, no clutter, no waiting. Just open and play. ▶ THREE GRID SIZES • Small (4×4) — perfect for quick rounds and new players • Classic (9×9) — the Sudoku you know and love • Huge (16×16) — hexadecimal grids (1–9, A–F) for serious solvers ▶ TOOLS THAT HELP, NOT HOLD YOUR HAND • Pencil notes — mark candidates in any cell • Undo — step back through every move • Hints — get unstuck without giving up • Built-in timer — track and beat your best ▶ MADE TO FEEL GOOD • Light and dark themes • Smooth animations and a satisfying win celebration • Adjustable zoom for comfortable play on any screen • Local best-time tracking — compete with yourself ▶ PLAY ANYWHERE Fully offline. No sign-up, no internet required. Your progress is saved automatically, so you can pick up right where you left off. Sharpen your logic, build a daily habit, or just kill five minutes. Vibidoku fits. Download now and start solving.