Cross Number: Math Crossword
Daily Logic Grid Puzzle Game
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Fill the grid so every row and column balances. 200 cross-math levels, a shared Daily Challenge with streaks, and Endless runs — deduction over speed, fully offline.
Fill the empty cells so every equation balances — across and down. Cross Number is a math crossword: each row and each column is an equation, and one wrong digit breaks both. Every puzzle is generated on your device and checked for a single solution before you ever see it.
Most number games test speed. This one rewards deduction. Start from the digits you can prove, pencil in candidates where you can't, and feel the grid click into place. A timer runs on every board, but only your star rating cares about it — the puzzle itself waits as long as you do.
WHAT YOU GET
• 200 levels across Easy, Medium, Hard, and Expert — from gentle addition grids to 9×9 monsters mixing all four operations
• A Daily Challenge that is the same puzzle for everyone that day, with a streak calendar showing every date you kept alive
• Endless mode with a personal best to beat in each difficulty tier
• Pencil notes and undo, so a wrong guess costs you seconds, not the whole grid
• Error checking that lights up the exact row or column that stopped balancing
• Stars, coins, and hints earned by playing — hold a streak for seven days and the game pays you 50 coins
PERFECT FOR
• Commuters who want a puzzle that fits a train ride and works in airplane mode
• Sudoku regulars ready for grids where arithmetic joins the logic
• Adults keeping mental math sharp without flashcard drills
• Anyone winding down at night who prefers deduction to doomscrolling
WHY NOT JUST SUDOKU?
Sudoku asks where the numbers go. A math crossword asks what the numbers are — every digit you place has to survive both its row's and its column's arithmetic, so one compact grid works your calculation and your logic at the same time.
PRIVATE BY DEFAULT
No account, no ads, no tracking. Puzzles are generated on this device, and your progress, streaks, and best scores stay on it. The game works offline; the App Store is contacted only to handle your purchase.
FULL ACCESS
Cross Number is a paid game with no free tier. One plan opens the whole of it — weekly, yearly, or lifetime (one-time purchase): all four difficulties, all 200 levels, the Daily Challenge, every Endless tier, and unlimited hints.
Download Cross Number and open today's Daily Challenge — your streak calendar starts with tonight's date.
Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase.
Terms of Use: https://leanstudio.asia/terms-of-use
Privacy Policy: https://leanstudio.asia/privacy-policy
Support: support@leanstudio.asia
Ratings & Reviews
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The developer, LEAN ASIA CO., LTD, 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
- LEAN ASIA CO., LTD
- Size
- 5.7 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16 or later.
- iPhone
Requires iOS 16 or later. - iPod touch
Requires iOS 16 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
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Equation Solver Lifetime $29.99
- Mental Workout Yearly $14.99
- Brain Training Weekly $2.99
- Copyright
- © 2026 LEAN ASIA CO., LTD
