Android applications for cell phones and tablets can range from simple utilities to complex applications with multiple screens. "Cashier" programs for recording financial transactions on the go are typical applications, as are general data collecting and mapping programs.
Custom Android applications open up a whole new world of possibilities in what you can do with your device. Recently I developed a cashier program for an organization for use at a fundraiser. It was run on a tablet and would calculate the amount owed, display the change needed for the amount tendered, and record all of the pertinent statistics, which it could also display as the event went on.
I can create and deploy stand-alone android applications on your cell phone or tablet per your specifications. These programs can be simple background utilities or more complex applications with input and output screens and any number of data streams. from simple data storage and retrieval to complex analyses and mapping, these programs can do whatever you want the way you want it.