UN Audio Channels:
Android: https://play.google.com/store/apps/details?id=com.audionowdigital.player.unitednations&hl=en
iOS: https://itunes.apple.com/us/app/un-audio-channels/id911809149?mt=8
UN News Reader:
Android: https://play.google.com/store/apps/details?id=org.un.mobile.news&hl=en