Amazon does something similar regarding stepping around the 30% Apple fee with Comixology and their ebook offerings- you can access them on the app, but you hav

Amazon does something similar regarding stepping around the 30% Apple fee with Comixology and their ebook offerings- you can access them on the app, but you have to buy them on a web browser. I can't recall if they explicitly say "go outside the app store to buy" or not though.