Handwriting memo "a Paper" (PRO) Apk

This app provides a sheet of paper to scribble your ideas boundlessly.
Boundless drawing area and natural writing feeling are the biggest features.
　
Features
– Boundless drawing area
– Natural writing feeling by a three types of pen
– Simple interface and intuitive use
– Quick startup and response
– Unlimited undo/redo
– Share as image
– Zoom view and linefeed
– Highlighter pen (Semitransparent pen) support
– Landscape view support
– Auto save by long-tapping Android back button
– Five ruled line types: None / Horizontal / Vertical / Cross / Music (staff notation)