Sudoku Solver · Solve & Learn
Solve, Learn & Master Puzzles
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Solve any sudoku instantly — or learn step by step with named techniques and conflict highlighting.
Sudoku Solver is the complete companion for sudoku enthusiasts — whether you want to crack a tough puzzle, sharpen your technique, or simply understand how each solution was reached.
Enter any 9x9 grid by hand, tap Solve, and watch constraint propagation and backtracking work through the board in an instant. Stumped mid-puzzle? Use the step-by-step deduction mode to reveal one logical move at a time, each labelled with the technique name — Naked Single, Hidden Single, Pointing Pair, X-Wing, and more — so you actually learn the reasoning behind every step.
Conflict highlighting marks duplicate digits in red as you type, catching input errors before you solve. Pencil marks let you note candidate digits in any cell, just like pencil-and-paper play. A built-in difficulty rater analyses the techniques required and rates your puzzle from Easy to Expert.
Jump-start your session with the included library of sample puzzles spanning every difficulty level. The technique glossary explains each solving strategy in plain language, making Sudoku Solver as educational as it is practical.
Key features:
- Instant solve via constraint propagation and backtracking
- Step-by-step deduction with named technique labels
- Real-time conflict highlighting
- Pencil-mark candidate notation
- Automatic difficulty rating (Easy to Expert)
- Sample puzzle library across all difficulty levels
- Technique glossary for learning and reference
- Clean, distraction-free grid interface
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Linh Phan Nhat Khanh, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Linh Phan Nhat Khanh
- Size
- 580.6 KB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 PNKL