I have not found a better prayer app! What I love most about this one is the ability to type out long scriptures for different categories on the keypad that I have for my iPad, then I can backup my prayers to Dropbox and then restore them to my iPhone to take with me wherever I go. I also love that you can set rotation speed for prayers that I need to pray daily, weekly, etc. Love it!
CFNiki about Christian Prayer Prompter