PAD Radar app introduced medals in version 1.5: Reddit link. Check out what to do with them in that Reddit link.
I actually deleted the app some time back because it was really boring and also part of my plan to reduce my time spend on PAD. I picked it back up again because of this medals system making it slightly more interesting. I wonder if you are able to get Izanagi X and Apocalypse X from just searching for medals in app or only available from physical pins...
Update: Seems like you can get Izanagi X and Apocalypse X from searching in the PAD Radar app: http://www.padpadblog.com/2016/10/pad-r_25.html. A player from Taiwan got it according to PAD blog which references the user from a Taiwan forum!
