Please tap on the widget, and you can write memo on it. Please use it like sticky, post-it, or note-pad. You'll find it a tool with full of entertainment. It will surely advance productivity when used for your job.
This application is a widget for your home screen and you can enjoy personalization of it.
Keep pressing the home screen till an additional menu of widgets appears. Pick out "Sticky note BANAO" from a list of widgets.
This is an official "BANAO" app.
https://twitter.com/BANAO_official/status/702383362623856641