Are you using RFduino or SImblee?
Either way, writing APPS for IOS, and even Android, has an extreme learning curve if you are just starting to learn programming.
If you are using the Simblee and just want to do APPS that use simplistic widgets like used to make a thermometer,
buttons, sliders, etc, then SimbleeForMobile will keep you from having to learn xcode or java. Currently, the downside of using SimbleeForMobile is we are all WAITING for Android support. So iOS only for now.