You can cast from iOS to a Chromecast, I do it on a variety of apps.Almost signed up to GCN just now, but then realised though they do have an iphone app, they don't have an ipad app that lets you use the full and large screen of the ipad 🤷‍♂️ I don't have any TVs currently capable of airplay (though my LG is promising support this year some time) and also you can't cast to chromecast from ios. Looks like I'm out!