Downloading iOXAudio 1.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free Mac application is Matt Sieren.
The program lies within System Tools, more precisely Device Assistants. 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.
From the developer:
iOXAudio is a tray bar monitor for OS X 10.11+ to establish audio connections with iOS devices. Therefore, OXAudio introduces a convenient way to access iOS devices from the tray bar and enable audio functionality. Once a connection has been established, the device should appear as an audio input device in the DAW of your choice.
You may want to check out more software for Mac, such as iStar Composer, Matchprint Virtual or LightLid 35 Calibrator, which might be related to iOXAudio.