It is a simple and easy-to-use notepad application.
It's easy to read in a chat-like format, and you can write notes directly from the notification without opening the app.

You can also tag notes with color and note them separately in multiple notifications.

You can prevent some things from forgetting what to write while trying to open the app.
You can open the menu by long-pressing the memo, and you can perform operations such as copy, share, and delete.
You can also open them in other apps by clicking on phone numbers, web links, email addresses, etc.

Also, when the power is turned off and restarted, Notepad is automatically displayed on the notification screen.