Sudoku Daily Train

Sudoku Daily Train is a calm, focused Sudoku app built to help you keep your mind sharp — one grid at a time. • Four difficulty tiers from Easy to Master • Smart hints that explain the logic step by step • Streaks, stats, and best times to track your progress • Notes, undo, and helpful highlights while you solve • Optional daily reminder to keep your habit alive Free to play with well-spaced ads. Remove Ads is available as a one-time purchase if you prefer uninterrupted play. Your puzzle progress stays on your device. No account required.