Any way to change the smudge brush tip in Photoshop iPad app...?

I love the smduge tool in Photoshop, and I use a wide array of them in the desktop version of Photoshop, however as I am playing with my iPad, I've noticed no way I can find to change the smudge brush. The default is not my favorite, so was wondering if anyone knew how to change them (or at least knew if you COULD change the brushes or not)? Thank you!