I like the ideas behind the client, and I hope this app gets certified.
But please, PLEASE, fix the hideous UI. Those backgrounds have to go, at the very least because they make the icon text hard to read. The color scheme looks dirty and sickly. iOS apps typically don't have Springboard-style layouts, i.e. a "home screen" and several icons to click, they have one visible screen that can be switched to different tabs (facebook is a notable exception to this).
These are just off the top of my head. I'm sure others could supply more suggestions.
But, again, good luck. I wish you the very best with this project.