CoverDesk 1.6 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 Mac app is a product of AppYogi Software. The software lies within System Tools, more precisely System Optimization.
From the developer:
Cover Desk is an all-in-one desktop utility designed to help you improve your Mac experience. Therefore, the tool can hide all the desktop icons with just a click, display the focused window for better visibility while other windows remain undertint, show color temperature based on day/night light, and set resolution for connected monitors or projectors.
You may want to check out more Mac applications, such as DevonSync, Visage Login or Peek-a-Boo, which might be related to CoverDesk.