UBell is a free Android app developed by Maxwell Wang that offers a comprehensive solution for video doorbell systems. This app is designed to work with compatible doorbell devices and provides various features to enhance home security.

One of the most notable features of UBell is its ability to wake up the doorbell device over the network, ensuring that you never miss a visitor. The app also supports PIR and key phone call, allowing you to receive notifications and answer calls from your phone. Additionally, UBell supports lock screen answering, ensuring that you can respond to visitors without unlocking your phone.

UBell also offers real-time video viewing and two-way audio communication, allowing you to see and talk to visitors in real-time. The app also supports video query and playback, enabling you to view recorded footage at any time.