DouWan is a free screen mirroring and game-streaming app developed by XinDawn Tech. With DouWan, users can effortlessly cast their iPhone, iPad, or Android device screens to their PC with no need for a personal hotspot or Wi-Fi. The app offers a zero-lag connection, ensuring seamless and smooth 4K ultra-clear video quality with an ultra-high framerate of 60-100.

DouWan also allows users to record and live stream 4K gameplay while playing their mobile games. Additionally, users can watch videos and play mobile games on a bigger screen without any lag while charging their phones simultaneously. This also has a feature that allows users to use their phone as a PC HD camera, making use of the best camera they already have with them.

It is a reliable and efficient app for screen mirroring and game streaming, providing excellent video quality and a seamless connection between mobile devices and PCs.