Since installing iOS 11 I keep getting in-app popups asking for a rating. I find this annoying. If I want to rate an app I can go to the App Store to rate it. I don’t need a popup pestering me.
Here’s how I turned off in-app rating requests. Go to Settings > iTunes & App Store > In-App Ratings & Reviews and turn it off.
By the way, while I was there I also turned off Video Autoplay.