Suko - PuzzleMonster

Suko is a number-placement puzzle. You fill a 3×3 grid with the numbers 1 to 9, and each puzzle adds colored regions plus circle targets. Place the numbers so every region and circle adds up to its target sum.

Features:
• Clean controls: tap to place, tap again to clear, one-tap Undo
• Optional Auto Notes mode: add a second number to a cell and both turn into notes, no pencil toggling
• Hold to Select: drag from the number pad straight to a cell
• Three difficulty levels: Easy, Medium, Hard
• Endless generated puzzles, free to play
• Unfinished puzzles are saved and can be resumed from the menu
• A timer that only counts while you are actually playing
• Stats, best times and streak tracking
• Light and dark themes and large text support
• Plays fully offline
• No third-party ads, only occasional suggestions for other PuzzleMonster games

A fresh spin on the classic number puzzle. If Sudoku, Kakuro, or KenKen are your thing, Suko will fit right in.