Key Features
🧩
Multiple Difficulty Levels
From Easy to Expert, find the perfect challenge for your skill level.
💡
Smart Hints
Get intelligent hints that help you learn solving techniques, not just answers.
📚
Learning Guide
Detailed explanations of advanced solving techniques to improve your skills.
📊
Game History
Track your progress and revisit past games with the replay feature.
🎯
Note Mode
Use pencil marks to track possible candidates in each cell.
🌙
Clean Interface
Minimalist design that lets you focus on solving puzzles.
How to Play
1
Choose Difficulty
Select a difficulty level that matches your skill.
2
Fill the Grid
Tap a cell and enter a number from 1-9.
3
Use Hints
Stuck? Use hints to learn the next logical step.
4
Complete & Review
Finish the puzzle and review your solving path.
Upgrade to Pro
Unlock Your Full Potential
One-time purchase to unlock all Pro features permanently.
- ✓ Unlimited game history
- ✓ Hard & Expert difficulty puzzles
- ✓ Detailed learning guides
Free users get:
- Easy & Normal difficulty
- 3 saved games
- Basic hints & replay
System Requirements
- • iOS 17.0 or later
- • iPhone and iPad compatible
- • No internet connection required to play