Everyone is at it aren't they? "Lets make an app - that's what the kids want, right?" It reminds me of the days when people added in a splash screen because it was the new thing to do.
If an app doesn't fit into at least one of the following categories it shouldn't be an app - it should be an optimised mobile site.
1. It does something useful with the fact it knows your location
2. It it sends you regular useful information
3. Is fun
If you take a step back. look at your shiney new app and realise it's just giving information, much like a normal website, it SHOULD be a website (optimised for mobile obviously). Otherwise all you are doing is creating a closed platform which relies on somebody looking for and downloading your particular app. In the case of the itunes store this means them knowing it's name too.