free ones- gas cubby/pandora radio/i heart radio/ 5-0 radio (police scanner)/Trapster/Inclometer/Logworks or pocket dyno/Dashboard/Weather channel/ alarm clock/photobucket/IPB app(for the boards here)/Facebook if a user to name a few
find iphone (in case you loose that fancy phone, you can locate it over your computer on google maps), shazam (for finding out a songs name), and flashlight (for looking for dropped screws etc. when its dark out)
if you're the type that say, likes to take your offroad vehicle out on unmarked roads and trails I'd recommend Gaia GPS. It's a little pricey but it's awesome.
