# SudoStep: Sudoku Coach

> Calm Sudoku with step-by-step teaching hints and six difficulty levels.

Canonical page: [https://chrome-stats.com/d/com.blacksunset.sudostep](https://chrome-stats.com/d/com.blacksunset.sudostep)

## Overview

- **ID:** `com.blacksunset.sudostep`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Blacksunset Studio
- **Category:** GAME\_PUZZLE
- **Downloads:** 17
- **Version:** 1.1.0
- **Last updated:** 2026-09-07
- **First published:** 2026-07-13
- **Publisher country:** EE
- **Size:** 1.44 MB
- **Data as of:** 2026-09-15
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.blacksunset.sudostep)
- **Website:** [https://nulleuri.ee/apps/sudostep/](https://nulleuri.ee/apps/sudostep/)
- **Privacy policy:** [https://nulleuri.ee/apps/sudostep/privacy/](https://nulleuri.ee/apps/sudostep/privacy/)

## Description

Solve Sudoku without interruptions and understand every step.<br><br>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.<br><br>PLAY YOUR WAY<br><br>• Six difficulty levels, from Beginner to Master  <br>• Relax, Guided, and Challenge play modes  <br>• Cell-first and digit-first input  <br>• Long-press number lock for fast entry  <br>• Manual or automatic pencil marks  <br>• Colour marks for advanced solving  <br>• Unlimited undo and redo  <br>• Optional timer, mistake highlighting, and touch feedback<br><br>HINTS THAT TEACH<br><br>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.<br><br>Learn useful techniques at your own pace, including singles, locked candidates, pairs, triples, and X-Wing.<br><br>PUZZLES YOU CAN TRUST<br><br>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.<br><br>MADE FOR CALM FOCUS<br><br>• Reliable auto-save after every move  <br>• Continue exactly where you stopped  <br>• Local completion history, best times, and median times  <br>• Light, dark, and high-contrast themes  <br>• 11 interface languages  <br>• Works completely offline<br><br>PRIVATE BY DESIGN<br><br>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.<br><br>Pay once. Solve calmly. Learn every step.

## Rankings

- #2,652,782 — Overall

## Permissions and access

### Permissions

- `android.permission.VIBRATE`
- `com.blacksunset.sudostep.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.blacksunset.sudostep)