Lightmeter App (Exposure)

I love photography, and I hate all of the light meter apps in the app store. So, I decided to design my own.

Checkout the attachment for whatever those real pixels are :) But in short, upon a long tap over one of the metrics a tooltip will appear from where you can scrub left or right to change the value and update the exposure accordingly. Trying to keep it simple.

Looking for an iOS developer, any recommendations are gratefully appreciated!