Clear Nines
Puzzle
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Clear Nines is a calm, focused Sudoku app built for repeated solving and real skill growth.
Play classic Sudoku puzzles across Easy, Medium, and Hard difficulty levels with a clean board, notes mode, undo, pause-aware timing, mistake tracking, and helpful row, column, box, and same-number highlighting.
When you want help, Clear Nines can do more than reveal an answer. Teach Me hints explain why a move works, and Expert Path shows a logical solving route so hints become lessons instead of shortcuts.
Features:
- Easy, Medium, and Hard Sudoku puzzles
- Notes mode for candidate tracking
- Smart board highlighting
- Quick hints and Teach Me explanations
- Expert Path solving walkthroughs
- Stats, streaks, best times, and mistakes
- Multiple readable themes
- Offline-first gameplay
- Optional account sign-in to sync purchases and entitlements
- Optional Premium upgrade to remove ads and unlock more learning tools
Your puzzle progress, stats, and settings stay on your device. Account sign-in is optional and is used only to sync purchases and entitlements across devices.
Optional purchases include a one-time Premium upgrade and consumable coin packs. Coin Club is an auto-renewing monthly subscription that provides 200 coins per paid month and 10% extra coins on coin-pack purchases while active. Prices are displayed in your local currency in the app. Payment is charged to your Apple Account at confirmation. The subscription renews automatically unless canceled at least 24 hours before the current period ends. Manage or cancel it in your Apple Account subscription settings.
Privacy Policy: https://clearnines.app/privacy.html
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Introduces the new Raised board: a tactile porcelain-style Sudoku board with recessed 3×3 regions, lifted selection feedback, and a subtle placement animation. Optional haptics can be turned off in Settings, and the original Classic board remains available. This update also improves VoiceOver cell details, supports Reduce Motion and increased contrast, fixes matching-number highlights across 3×3 boxes, and keeps banner ads anchored below gameplay. Banner space now appears only after an ad loads and collapses automatically when an ad is unavailable.
The developer, PHILLIP XUEHUA PENG, 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:
- Purchases
- Location
- Contact Info
- 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
- PHILLIP XUEHUA PENG
- Size
- 5.1 MB
- Category
- Puzzle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 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+
- Contains
Advertising
- In-App Purchases
Yes
- Coin Club $2.99
- 550 Coins $4.99
- 3000 Coins $19.99
- 1200 Coins $9.99
- 100 Coins $0.99
- Premium Unlock $4.99
- Copyright
- © 2026 Peng Intelligence