Fold it and the monster bites. ChompDuo was made for the fold. Close your iPhone Duo and a pair of silly eyes peeks out from the cover screen; tap them and they jump. Open it, and the whole inside display becomes a mouth. The jaws follow the hinge: fold a little and the teeth close in, snap it shut and it CHOMPS, with a crunch you can feel. Six monsters are waiting, from big purple Cartoon to a candle-lit Pumpkin, just in time for Halloween. Happy folding, and keep your fingers clear of the teeth.