You must have the Mevo app or Multicam App in order to use the camera. However, once NDI or Webcam Mode modes are enabled the camera can connect and stay connected to your computer without the app running.
The camera will not have it's full features (record, stream, or live edit) without connecting to the app via Hotspot mode or a local Wi-Fi network.
Learn more about which devices are compatible with the apps and camera. The Mevo apps are free to download from the App Store or Google Play.