Google has no plan to bring its YouTube app to the Windows Store for Windows 10 and Windows 10 Mobile Devices. However, there are plenty of third-party YouTube apps available for Windows Phones.
myTube!, the feature-packed third-party YouTube app for Windows Phone is currently available for free. myTube! is free for a limited time. myTube! costs $0.99 but it is available at no charge during the next two days. myTube! is available on almost all Windows devices including Windows Phone 8.1, Windows 10 PCs, Tablets, Xbox and even HoloLens.
The app comes with a lot of interesting features. It lets you listen to music videos in the background while you use other apps. Furthermore, it supports 2160p playback and 60 FPS videos as well.
You can also download videos and audio to watch or listen to later. On myTube!, you can create and manage playlists of your YouTube channel. It comes with notification support, the app will notify you when your favorite channel upload videos. Plus, DLNA support is also enabled and it lets you broadcast videos to bigger screens.