New App Store settings

One of these is a potential data- and money-saver

Auto-play videos

Video previews in the App Store play automatically by default, but you can change this behavior in Settings > iTunes & App Store > Auto Play Videos to play only on Wi-Fi or not at all. ratings and reviews

Turning off In-App Ratings & Reviews stops apps from pestering you for feedback. But it applies only to apps that’ve been updated or added to the store since Apple began requiring developers to use its official means of requesting feedback. Ofload unused apps

This feature sounds useful for saving storage, but Apple’s description implies you should think carefully about enabling it; it sounds like reinstalling a past purchase brings back its data only if the app is still in the store.