Cast Button on YT, Netflix Apps

[iu5]

Hi, my chromecast is due for delivery sometime next week and I just wanted some clarification on the cast button on the YouTube and Netflix Apps. From my understanding the chromecast has to be setup through a laptop/pc by going to the webpage link they provide and installing a small app to complete the install. After that happens, will the YouTube and Netflix apps on my nexus 4 phone automatically display the cast button? Or do I have to install some sort of app on my phone as well? I'm running the latest YouTube and Netflix apps btw.

Thanks

 

[ultravisitor]

The buttons will automatically appear on your apps after you set up your Chromecast and your devices are all on the same wifi network.