My game has low FPS on iPhone 5 but not Android...

I am new to Unity and hope this is just a configuration setting or something...but when I do my iOS build and run it on my iPhone (which runs quick and runs all other appstore games quickly with high FPS) It runs really slow, I am estimating around 15 FPS.

I am doing a "Development build" with no script debugging and running from within XCode which deploys to my iPhone 5.

When I try the same process to deploy to my Android Motorola Moto G phone (Really not that powerful compared to an iPhone 5) it deploys and is at least 60fps the whole time - smooth as anything and perfect.

Can somebody explain what may be the problem? What should I check? Has anybody seen this before?