[2020] Twitch crowncast extension on mobile device

While watching streams on Twitch having the ability to interact with the game and even getting some benefits out of it is a really nice feature.
But what about having that integrated with the twitch app on iPhone/iPad (and other mobile devices)?
Are there plans to implement that or is it not worth it due to dev policies with AppStore (and maybe others)?
As I am watching a lot Twitch on iPhone it would be nice to have crowncast on it as well.