Clear Nines

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/