Depending upon which mobile platform your target audience use most, getting a mobile application developed can be a highly specific need. Some find their target audience happy with latest Android, others are exhaustively surfed though Apple devices, and there are those who target both the audiences (and more), getting both, the Android as well as iOS app (along with the others, like for Nokia, Blackberry, etc). Mobile User Interface (MUI) plays a cital role in the development process, though. The lesser the keystrokes and other set of functions, the more user-friendly it is considered.
The hand held devices would continue to evolve, the way people have fallen in love with the idea of carrying their world in their pocket. Experts thus recommend responsive design while finalizing theme for the mobile site, so that it fits in every device it is used. The user’s behavior and device would never contradict this way.