Black or White mobile puzzle app for iPhone and iPad

This is a puzzle game to paint cells with black or white according to numbers.
When painting is over, the picture will appear.
The hint number indicates how many black cells are in the surrounding nine cells (3 x 3).

"Black or White mobile" is an app that made it possible to play "Browser version (Adobe Flash) Black or White" in mobile environment.
From accumulation so far, the number of puzzles is over 600!
Two puzzles will be added every week from now.

Also, in the app version, a help function is added so that it can play easily.
In addition, It is also possible to inherit the data of "which puzzle you cleared" from the browser version to the application version.

If you quit in the middle of playing, you can start from the continuation later.
On the puzzle list screen, the number of the puzzle being saved is marked.
If you start another puzzle, that puzzle will be saved and the original save data will be erased.

*Internet connection is necessary to play this game.