It is blackboard app for high-definition LCD.
[important] An advertisement is not displayed.
Change thickness of the chalk freely.
Always draw fluent and smooth curves.
It does not become late even if you draw a lot of lines.
Reopen with data save with a preview.
Five colors of stack coating.
Shading off to delete with a finger.
Share it LINE, Instagram, Twitter and so on.
iPhone, iPad, Mac can share an image in AirDrop.