ios drawing app

I need an ios drawing app. its called Slate. check out [login to view URL] and [login to view URL] for more info on that...some of the new functionality I'd like to add to an app is the ability to have a timeout so after a certain amount of inactivity, the image is saved and a new page is generated. Maybe also the ability to send drawings to an apple watch or pebble? There's a few functions in the slate that are still needed, like the "notebook on/off" mode (the tablet is more sensitive in notebook mode), disconnection alerts. the key features of the slate are a) when someone writes a word or makes a drawing, the phone or iPad samples the drawing and makes it as big as possible on the screen and b) there is a setting for a delay, when a drawing hasn't been sensed for a certain time period it saves it and clears the display ready for another drawing...maybe a swipe on the screen can switch into viewing saved drawing mode...