Calcudoku & Mathdoku Puzzle

Sopivasti

About this game

Calcudoku combines the logic of Sudoku with arithmetic challenges. Fill each row and column with unique numbers while ensuring grouped cells (cages) combine to reach their target using addition, subtraction,
multiplication, or division.

FEATURES
- Grid sizes from 4x4 to 9x9
- Three difficulty levels: Easy, Medium, Hard
- Daily puzzles: Three fresh challenges every day
- Pencil marks for tracking candidates
- Undo and redo support
- Optional hints when you need them
- Error highlighting to catch mistakes
- Auto-remove pencil marks for faster solving

DESIGN
- Clean, distraction-free interface
- Multiple color themes
- Light and dark mode
- Comfortable for extended play sessions

NO ADS, NO LIMITS
Unlike other puzzle apps, Calcudoku has no advertisements and no artificial restrictions. Play as many puzzles as you want, whenever you want. No waiting, no timers, no gates.

HOW TO PLAY
1. Fill each row and column with numbers 1 to N (grid size) without repeating
2. Numbers in each cage must combine to equal the target using the shown operation
3. Numbers can repeat within a cage, but not within the same row or column

Start with smaller grids and easier difficulties, then work your way up as your skills improve.

Developed by Sopivasti - independently designed puzzle games that respect your time and attention.

What’s new

Improve UI/Bug Fixes :D