Seems to run alright on the iTouch (iPhone). Cannot zoom in on pictures with the free version. Checking out this post on the iTouch and I really like the layout of the forums on Tapatalk. I like how I can see who is online and click on each person and check out their profiles. The available options, from what I have seen, make it worth shelling out the few dollars for it. I do have a question though... Does the paid version save your login/password information?