You have a lot of great options for RSS feed readers. If you’re looking for something without a lot of overhead, Litenin is a great place to start.
Litenin turns your RSS feed into a text list that’s incredibly easy to browse. It loads quickly and doesn’t take a lot of data to do so. This means it’s useful if you’re stuck with data limits (from mobile or free Wi-Fi). It doesn’t have much in the way of features, but that’s kind of the point.