Brilliant way to reduce processing power down to iOS level. Is your "edit" of the UI open-source as well? 
The UI program codes are going to be open source after apple's review.
However, I don't have copyright on the UI elements, including icons, background pictures, etc. I am asking their author Pottor200, see if it's OK to be open source. And that part has not been decided yet.
Awesome and wish you all the best with App Store review.