ZoomOn 3.4.53 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.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software lies within System Tools, more precisely Device Assistants. This free Mac app is an intellectual property of Master Home Security LLC.
From the developer:
ZoomOn is a home security camera and monitor application. It supports the most common types of security cameras (HomeKit, ONVIF, and other IP cameras - RTSP, MJPEG, and HLS protocol) and mobile phones (WebRTC). You can use this utility as a phone/phone security system, IP or CCTV camera, monitor for your HomeKit or ONVIF cameras, house surveillance system, live cam monitor, pet / baby / elderly monitoring system, and home alarm.
You may want to check out more Mac applications, such as Fire, NetSpeedometer or Xilisoft iPhone Transfer, which might be similar to ZoomOn.