Every day Clac! gives you a sheet of paper with an origami hidden in it. Fold your iPhone Duo and the paper takes a fold, right on the cover screen, with a little paper "clac". On the last fold you see what it was: a crane, a fox, a lotus, a phoenix. No Duo? Every 500 steps counts as a fold. 30 origami, rare papers like gold-leaf washi, step-by-step instructions to fold them for real. Free to start, one purchase unlocks everything. No account, no ads, no tracking.