Hello. I just released a free version of Personality Types. You can find it here: Personality Types: Free. Our paid version is also still available: Personality Types. The free version does not have nearly the same amount of functionality as the paid version (of course), but you can still get a feel for the layout, user interface, and overall purpose of the app. The app, by the way, was built with one of my old professors from UCLA. He's worked with a lot of Jungian, Myers and Briggs, and Temperament theories of personality psychology. It's a cool mobile reference that consolidates a lot of what he has to say.