FunMobility is bringing more fun to the iPhone with its YouTones user-generated ringtone app. Already available on a number of handsets from Alltel, AT&T, Metro PCS and Verizon Wireless, YouTones now has the distinction of being the first application of its type for the iPhone.

The $4.99 download lets you create custom ringtones and audio messages by combining your voice with sound effects using the app's audio mixing engine. So, if you've been waiting to change your iPhone ringtone until you could make your co-worker sound like a chipmunk, now's your chance.

YouTones for the iPhone is powered by FunMobility's FunMo.com Web site and can be downloaded from the iTunes App Store. Folks with other types of phones can download YouTones directly from FunMo.com.