Mi Pi (pronounced "My Pie") puts the power of pi in your pocket. Use Mi Pi to search the first million decimals of pi for your birthdate, lottery numbers, or whatever sequence interests you -- you know that it is meant to be if pi says so. Impress your friends when you show them how pi is much much longer than just the 3.14 that they may be used to. Check to see how far apart your birthday is from the guy/gal of your dreams - see if it is really meant to be.
Mi Pi will also speak its way through the digits. Not necessarily useful, but it can help you break the world record for memorizing pi. Or maybe you just like to fall asleep to a little mathematical magic.