SecretDesktop 2.0 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. The actual developer of this free Mac application is Takuto Nakamura.
From the developer:
SecretDesktop is an application that lets you hide desktop icons temporarily so you can take a screenshot or simply keep your desktop clean. You can toggle the hidden state with the shortcut of Shift + Command + H. The system supports multiple screens and work-spaces.