The main image has to go. The two sides of the image don't line up properly and the effect is quite jarring.
Location based apps like this always disappoint me. I remember Color. When I first heard of it, I was so excited. I love music, had a few festivals ahead of me, and it just seemed like a perfect app. So, I installed it, tried it many times, never saw anyone else and gave up.
And, knowing what I know about marketing, honestly, it's hard to get excited enough about an app like this to even install it. I'm often an early adopter, but with these apps, if I'm too early, I'll likely never use it again.
It's tough. In theory, it's such a good idea and I suspect it could work as a white label networking app for conferences. But as a mass B2C product, honestly, I wouldn't even try it.