Download of CinIO 2.23.20 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The actual developer of this free Mac application is Cinamaker, Inc. The program lies within Audio & Video Tools, more precisely Editors & Converters.
From the developer:
CinIO is a companion app to Cinamaker Director Pad allowing you to send the contents of your Mac desktop to your live Cinamaker session. You can use it for adding audio and video from your Mac, as well as presentations, complex illustrations and animation.
You may want to check out more software for Mac, such as ImTOO iPhone Video Converter, ImTOO DVD to iPhone Converter or File Name Encoding Repair, which might be related to CinIO.