After Google Stop its RSS Reader. Feedly is one of the most popular reader. It is easy to use and is also available on Android and iOS platform. Also web interface is quite nice. You feel like you are reading a newspaper.
For more check out : http://feedly.com
For iOS app check out : https://itunes.apple.com/app/feedly-reader/id396069556
For Android app check out : https://play.google.com/store/apps/details?id=com.devhd.feedly