Smartphone Apps

I've been toying around with the idea of making a program for either the iPhone or Gphone (Android) or both. Every time I come up with an idea though I always think that nobody would use it or find that someone has already built a similar app, usually far superior to my idea. Developing on this platform is interesting to me because a smartphone is the convergence of nearly every electronic gadget that you own. Computer, MP3 player, GPS, TV, calculator, watch,... all of these functions can be performed by one device. The main problem being that it is a jack of all trades master of none (I guess it is master of mobility). For example, your not going to write your dissertation on an iPhone and the calculator on the Gphone isn't going to graph 3D equations like your TI-89 but the you could in fact perform both of these on a smartphone.

Mobile applications are by far the most interesting market to me. Sometimes they seem like magic. Take for example Wikitude. This app uses the phones gps and Wikipedia to find interesting things around you. Using the phones camera you can create an augmented reality that points at the location. Have you ever been looking for a museum or store only to find out you were right next to it all along? Wikitude to the rescue! From the website...

The truly compelling feature is the augmented reality cam view, users may hold the phone’s camera against a spectacular mountain range and see the names and heights displayed as overlay mapped with the mountains in the camera. Users may look out of an airplane window to see what is down there. Users may walk through a city like Seville, Spain, holding the phone’s camera against a building and Wikitude tells what it is.

Click here to look at the demo.

The question I have is will people buy these types of applications and how much will they pay for them.

Assuming your phone does the basic things like calling, calender, email, etc... If you could have any application on a phone what would it be? What do want that nobody is making?