No historicals!
This app basically shows just todays rate (libor has last week also) what is needed is the trends over time. I would recommend using the same format the "stocks" app has- select the key omes you want to track, and then it shows you currunt rate for all of them with a graph at the bottom for the one you selected (and you choose how far to look back)
Kaf1446grove about
Interest Rate Tracker Pro