Like so many apps, the Bible app you end up using is largely a matter of personal preference. All of the ones in this thread (and others) are good. If you don't mind installing and uninstalling try each of them out. My personal preference is Olivetree. If you check the link below you will see that they offer several types of Bible reading plans. The reader is free along with numerous pub domain translations and other books. "Seek and you will find."
http://www.olivetree.com/handheld/BibleReadMe/