monodomo has bChamp Beatbox (iTunes Link) in the iTunes App Store for FREE for a limited time.

bChamp offers an exciting new way to drum. bChamp is a voice controlled drum kit for your iPhone. Easily make groovy beats by beatboxing into the iPhone microphone. bChamp instantly translates your beatboxing into impressive drum sounds. Making and practicing beats was never so easy or fun. No talent required. bChamp does the work, you claim the fame.