Number Sum: Math Puzzle

Number Sum is a calm, addictive number puzzle. Each row, column and coloured group has a target — cross out the extra numbers so the ones that remain add up exactly. Simple to learn, wonderfully tricky to master.

No timer pressure. No lives to lose. Just you and the numbers.

★ HOW IT WORKS
• Every row and column shows a target sum
• Cross out numbers so the remaining ones match every target
• Coloured groups add their own targets for an extra twist
• Every puzzle has one unique, logical solution

★ PACKED WITH PUZZLES
• 2,000+ hand-tuned levels, from gentle 4×4 grids to brain-bending 9×9
• A new Daily Puzzle every day — build your streak and catch up on missed days
• Free Play: pick any size and difficulty for endless fresh puzzles
• Level map to replay any level you like

★ RELAXED & HELPFUL
• Notes: pencil small reminders into any cell
• Undo and Restart whenever you want
• Hints when you're stuck
• Colour-blind mode, sound and haptics options
• A quick interactive tutorial gets you playing in seconds

★ MADE FOR EVERYONE
• Clean, distraction-free design
• Plays fully offline
• Free to play

Whether you love Sudoku, Kakuro, cross-sums or just a satisfying logic puzzle, Number Sum is the perfect way to relax and keep your mind sharp. Start solving today!