SudoStep: Sudoku Coach

Solve Sudoku without interruptions and learn logical moves one step at a time. SudoStep is a premium classic Sudoku game built for focused play. One purchase gives you the complete experience: no ads, no account, no subscription, and no internet connection required. PLAY YOUR WAY • Six difficulty levels, from Beginner to Master • Relax, Guided, and Challenge play modes • Cell-first and digit-first input • Long-press number lock for fast entry • Manual or automatic pencil marks • Colour marks for advanced solving • Unlimited undo and redo • Optional timer, mistake highlighting, and touch feedback HINTS THAT TEACH Stuck on a puzzle? When SudoStep finds an explainable logical step, the hint names the technique, shows where to look, and explains why the move works. If no such step is found, you can choose to reveal one value from the verified solution. A move is applied only when you ask. Learn useful techniques at your own pace, including singles, locked candidates, pairs, triples, and X-Wing. PUZZLES YOU CAN TRUST Every generated puzzle is checked for one unique solution before play. Choose a fresh puzzle at any level, solve the Daily Sudoku, or enter one from a newspaper or book. Custom puzzles are accepted only when they have exactly one solution. MADE FOR CALM FOCUS • Reliable auto-save after every move • Continue exactly where you stopped • Local completion history, best times, and median times • Light, dark, and high-contrast themes • 11 interface languages • Works completely offline PRIVATE BY DESIGN SudoStep has no ads, analytics, trackers, social login, or developer cloud. Your puzzles, notes, settings, and statistics stay on your device. The Android app does not request internet access. Pay once. Solve calmly. Learn as you play.