Sudoku Proof: Daily Logic
Hints that explain every move
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Solve without ads or guesswork. Play complete offline puzzles for free, keep every move saved, and learn advanced techniques with one lifetime Pro unlock.
Every move has a reason.
Sudoku Proof is a clean, private Sudoku built for uninterrupted play and real learning. Start a puzzle instantly, finish it offline, and understand the logic when you want help. There are no ads, no account, no lives, and no subscription.
PLAY A COMPLETE SUDOKU
- Unlimited Easy, Medium, and Hard puzzles
- A shared Daily Challenge, including Expert and Master days
- Pencil notes with automatic cleanup
- Unlimited undo and redo
- Optional error checking and a timer you can hide
- Automatic local saving after every move
- Light and dark appearance on iPhone and iPad
LEARN THE REASON
Basic reveals help you finish without buying hint packs. Pro adds visual Logic Proofs that highlight the exact candidates, units, and eliminations behind the next step. Practice Singles, Locked Candidates, Pairs, Triples, X-Wing, Skyscraper, XY-Wing, and Swordfish.
BRING YOUR OWN PUZZLE
With Pro, type or paste an 81-cell puzzle, check whether it has one solution, see its difficulty, and solve it step by step.
ONE PURCHASE, NO SUBSCRIPTION
Pro Lifetime permanently unlocks Expert and Master practice, the complete technique school, custom puzzle solving, full daily archive, solve replays, advanced insights, and extra themes. Restore your purchase at any time.
PRIVATE AND OFFLINE FIRST
Your active game and history are stored locally. Private iCloud sync and Game Center are optional Apple services; either can be unavailable without stopping play or losing the local result.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This app is independently developed and maintained by an indie developer. Feedback and bug reports are always welcome. For collaboration inquiries, please contact me by email. Enjoy the app.
Email: yemaozi2026@outlook.com
Try an included photo to enter a puzzle with on-device OCR and editable review. New non-consumable difficulty unlocks reveal the complete answer and step-by-step reasoning. Landscape play and Settings navigation are improved.
The developer, 献慧 陈, 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
- 献慧 陈
- Size
- 10 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 7 more
- English, French, German, Japanese, Korean, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Lifetime $6.99
- Expert Answers $2.99
- Master Answers $3.99
- Medium Answers $1.49
- Hard Answers $1.99
- Easy Answers $0.99
- Copyright
- © 2026 ye maozi
