Sudoku Logic Lab: Learn & Play
18 Techniques, Guided Practice
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Go beyond guessing. Learn the logic behind Sudoku with 18 solving techniques, step-by-step explanations, guided hints, and 90 practice puzzles.
Sudoku is not about guessing. It is about understanding why a number belongs in a cell.
Sudoku Logic Lab teaches you to solve classic 9x9 Sudoku puzzles through clear explanations, visual examples, and hands-on practice. Learn 18 solving techniques, work through 90 targeted practice puzzles, and get help from a coach that explains the next logical step instead of simply revealing the answer.
LEARN STEP BY STEP
• Follow a five-part lesson flow: Concept, Find, Reason, Practice, and Checkpoint.
• Build your skills from Last Cell and Naked Single to X-Wing, Swordfish, XYZ-Wing, and Unique Rectangle (Type 1).
• See important cells, candidates, and eliminations highlighted right on the board.
PRACTICE WHAT YOU LEARN
• Work through 90 technique-based examples, exercises, and checkpoints.
• Get feedback that explains why a move works, not just whether it is correct.
• Review individual techniques and build confidence at your own pace.
SOLVE REAL SUDOKU PUZZLES
• Choose Coach Play for guided help or Free Play to solve independently.
• Play classic 9x9 Sudoku puzzles at different difficulty levels.
• Use pencil marks, undo, redo, and helpful board highlights.
• Return to an unfinished game and continue where you left off.
GET A HINT, NOT A SPOILER
Stuck on a puzzle? The four-level coach analyzes your current board and guides you from a gentle nudge to a full explanation. The answer comes last, so you can work it out for yourself.
TRACK YOUR PROGRESS
See completed lessons, technique mastery, recent practice activity, and how often you solve without hints.
START FREE, GO FURTHER WITH PRO
Try the introductory lessons and enjoy Sudoku play with free daily limits. Optional rewarded ads can provide additional opportunities to play or use the coach. A one-time Pro purchase unlocks the full learning curriculum, all 90 practice puzzles, unlimited puzzles, and unlimited coaching. No subscription required.
No account is needed to start learning. Your learning progress is saved on your device.
Stop guessing. Start solving with logic.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
We've improved the learning experience to make Sudoku easier to understand and practice.
• Added step-by-step guidance and hints in Practice Mode.
• Improved board resizing and expanded the explanation area.
• Added selectable background themes in Settings.
• Improved candidate elimination feedback and answer validation.
• Enhanced readability and multilingual UI layouts.
Learn not just the answers, but the logic behind every move.
The developer, ChanGyu Kang, 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 Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ChanGyu Kang
- Size
- 8.3 MB
- Category
- Puzzle
- 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 and 10 more
- English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- SudokuLearnLogic Pro $1.99
- Copyright
- © 2026 Nicechann Studio