SudoStep: Sudoku Coach

Blacksunset Studio

About this game

Solve Sudoku without interruptions and understand every step.

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? SudoStep does more than reveal a number. Each hint names the technique, shows where to look, explains what matters, and tells you why the move works. The 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 every step.

What’s new

First release of SudoStep: six difficulty levels, three play modes, explainable hints, lessons, Daily Sudoku, custom puzzle entry, pencil and colour marks, local statistics, offline play, three themes, and 11 interface languages. No ads and no account required.