Grade Spotter iOS 7

Trying to get my feet wet with the lastest HIG. I figured I would start by redesigning a personal project of mine. I have noticed that there are a lot of inconsistency with the measurements between the different native iOS apps. I found that giving a spacing of 16px (@2x) worked best for this project. I would love to hear your thoughts.

The data used in the mockup might be out of date. Using a modified version of @Tyler Galpin's iOS 7 Status Bar Pack