BarNote 4+

BarNote is a notepad & calculator application that can be quickly accessed from the menu bar.
It enables you to quickly calculate and take notes at any time.

*Memo
There are five slots for memos, and you can switch between them using the number buttons at the bottom. You can also attach labels to the buttons.

*Calculator
The calculator supports keyboard input as well as mouse operation.
The calculation formula is displayed to prevent input errors.
Values can be copied with ⌘C and pasted with ⌘V.

Shortcut keys
⌘0: Activate the calculator
⌘1~5: Switch memo
⌘Q: Exit application
Global shortcut keys allow you to quickly access notes at any time.
The default shortcut key combination is ⌃⇧, which allows you to call up memos with number keys.

You can also adjust the screen size freely and change the font.