I'm not sure the mfg, but I bought a mount for my Tom-Tom GPS for something like $15, and it worked great (I just got tired of "watching TV" while I rode). The same mfg made all kinds of iPhone mounts and other paraphernalia (but no hookah holders). I think I got the link when I simply googled the mount I wanted. There were hundreds of hits, but the cool company was about 8-10 deep on the results.

Since I just ordered an iPhone (company phone), I think I'll try a mount and see how these "app" things work.
Instead of C25K, maybe I can get C2DD, as in Dairyland Dare.

I ride with drrobwave a bit, and he's Inspector Gadget. My other riding partner is a Gen Y or whatever letter they're up to, and she goes nowhere without her screen thing. Both carry them on their person, one in the back jersey pocket in a ziploc bag, and one in a front slanted jersey pocket.