SmartViewer is an Android app developed by XUEQING ZHU in the category of multimedia. It enables users to remotely monitor camera and NVR equipment through their mobile phones, provided they have the device ID. This app supports Android 2.2 and above, as well as Wifi, 3G, 4G, and GPRS networks.

The app provides horizontal and vertical screen options for video and album viewing, and allows users to log in by ID. It also supportsscreen switching, preview audio monitoring, voice intercom, video capture, and PTZ control. Additionally, SmartViewer supports picture and video file playback and adding equipment by scanning two-dimensional codes. Users can also assign a device alias and modify the device username and password. Lastly, the app supports device screenshots and both H264 and H265 video data.

Overall, SmartViewer is a reliable and user-friendly app that offers a comprehensive set of features for remote monitoring of cameras and NVR equipment.