I feel the same. Unfortunately, after spending a few minutes with such an app and not having a positive impression, it's pretty rare that I would revisit the app again later in the future. Most of the people I know behave the same way: if it catches their attention, it stays on the phone or else the app's gone.
The best launch scenario for them would have been SXSW .. instead, all the group messaging apps got the limelight and these guys seem to have missed that boat ..
Also, what's the privacy aspect of this app?! I could think of a few concerns.. e.g. someone's photos popping up when the user doesn't intend to be seen at a particular place ..