Introducing Just a Paper – Minimalist Writing App
The app name is Just a Paper. As the name suggests, It's just like paper.

It has only four features: change font style, change font size, adjust width, and change line height. Here's how to install it:
- Install from Github page (macOS only)
- Run the command below before opening the app
- $ sudo xattr -cr "/Applications/Just a Paper.app"
You need to run the command because it's a test app. Without the command, you'll get a warning. The app is open source. You can download and customize it.