ScreenNote 4.4 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free Mac application was originally designed by Takuto Nakamura. The application is categorized as Design & Photo Tools.
From the developer:
ScreenNote is a paint tool that allows you to draw shapes on the desktop like on a canvas. You can toggle its state (show/hide) pressing the left- and right-side modifier keys (command, shift, option, control) at the same time or by long-pressing the modifier key.
You may want to check out more Mac applications, such as TurboCAD Mac Designer, DropImageURL or Polaris, which might be related to ScreenNote.