Doku-Doku app for iPhone and iPad

Doku-Doku is a cool and stylish number placement puzzle.

Fill each cell with numbers between 1 and 9 getting the hints from the 9x9 playing board. The same number can be placed only once in each column, row and a 3x3 region.
The game features a useful Memo and an easy-to-read Guide function that help enjoying a smooth gameplay.

Simple and Beautiful Interface
The game was designed to excel in usability with a friendly and refined user interface in order to enjoy the puzzles to the utmost!

*While in-app-purchase content requires additional fees, the game
features 30 free puzzles.
*The actual price might differ depending on the region.