Instead of compiling your app to run on the mobile device every time you change the code, you can just run the game in the Unity3D editor simulator and connect to the remote gyroscope running on your iOS device. See the introductory Video to see how it is intended to work.
You gain access to the following information:
The GyroMote prefab comes with some convenience options that can speedup your project development even more. Select the prefab in your scene and in the inspector look for the script components attached to it.