I was wondering whether there is any app for mobile phones with solvable tactics problems. Sometimes when I'm outside I feel like solving some, but unfortunately I have no computer with me.

I second that emotion.

Fritz for DS has some tactics problems, but mobile phone...I don't know any.

I found Pocket Chess Tactics ART, but it's only for pocket pc's I want something much more simple(and I don't own a pocket PC :P ). Any java developers out here willing to code something for us ? (: