It used to be not bad

The new update claims to ease up the color picking action, the fact is the color picking gets a lit bit easier but the update makes it so much more difficult to draw details. The tolerance for color picker is too huge that when you try to draw small details it ignores your pen. Whats more, as far as I know, color picker is used seldom

And the app randomly quit and you lose your documents and signed out of your account

mozarcmu about Sketchbook®