I’m typically wary of “personality” tests, and the whole subset of the people management / “human resources” space that’s heavily invested in them. Speaking from my own experience, the personality that others notice in me has changed substantially over the last few years. Any assessments that claim to see into a steady inner core, therefore, get a skeptical look.
A little background: at an exciting startup project, we're developing two main components -- a mobile client (a smartphone app) and a server. Currently, we've got an iOS (iPhone / iPad) client out, in a very early preview stage (more of an alpha than a beta) and we're building the Android side to match.