When starting developing a new mobile app it is always tempting to jump directly to your favourite IDE and start developing, but do yourself a favour and spend a few minutes planing what you are going to develop. This will most likely save you a lot of time later on.
I’m creating a very simple Windows Phone 7 app called PinCodeKeeper and as the name states this application will keep your pin codes.
It’s always a good idea to start sketching the wire frames for your application. I like to just make some easy and not very detailed wire frames covering the most important parts of the application. The most important at this phase is to identify the functionality you want the app to contain. These sketches are also very good to use when discussing the app with potential users/customers.