HDR is a new kind of high-quality digital photography, in which the physical system takes a large number of photos and then combines them all, choosing for detail et cetera. It exists for Android:
https://play.google.com/store/apps/details?id=com.almalence.opencam
as well as iOS:
https://itunes.apple.com/us/app/hdr-photo-camera/id465283767?mt=8
and there are also single-purpose cameras with HDR as well.