Do you want to control via bluetooth the Arduino project you built?
Let your iPhone or iPad be a remote control for any micro-controller with a bluetooth module.
Run the app, search for your bluetooth module and connect. Once you are connected you will be able to send your own commands to your Arduino board using the keyboard or some fancy buttons
What's new (v2.1)
This update contains a new settings section for customising the 'line feed' options when writing a command, as required by many of you.