XSW UFO is a free Android application developed by MARK mai under the lifestyle category. This app allows users to remotely control a four-axis aircraft using their mobile device. One of the best features of this app is the real-time video display that shows footage from the camera on the aircraft. The video data is transmitted via 2.4G WiFi protocol, ensuring high-quality footage and a smooth user experience. Additionally, users can take photos and record videos from their mobile device while controlling the aircraft. Overall, XSW UFO is an excellent app for those interested in remote control aircraft and aerial photography.