HD Video Screen Mirroring Cast is a free app, which lets you mirror your Android smartphone's screen to your TV. This is possible with a wireless display, or with a connected television. It works with a variety of TV models, including those with Android TV, and it works for both mobile phones and tablets.

HD Video Screen Mirroring Cast works in the background, meaning that it does not require any other apps to work. You can use the app to mirror your smartphone's screen to your TV, even if you have not installed the app on your TV.

This is a free app, which is compatible with most Android devices. You will not need to pay a penny to use it.