Is YouTube app free

The YouTube app itself is free to download and to use, however both the YouTube app and website can consume large amounts of data. This shouldn't be a problem if you're using the device when it's connected to your WI-FI at home. But exercise caution when using this app on your mobile data (ex: 3G, 4G). If you don't have an unlimited mobile data plan, over use of the YouTube app on you mobile carrier's signal can incur additional data charges.