"Paint Kid" is a pretty easy-to-use painting application that is designed specifically for little kids to enjoy doodle freely on iPhone, iPad. It supports 10 brush. The brush size and color is randomly adjusted to let kids entertained all the time.
And more fun, "Paint Kid" can import photos for kids to doodle on. Kids always love to draw on family photos to make them look unique interesting.
Up to six family members will be able to use this app with Family Sharing enabled.