iOS approach to location based peer to peer communication

I recently have been very interested in developing iOS apps (for iPhone specifically) that can "communicate" with nearby (geographically) apps.



My networking skills/resources are limited, so I was really hoping to make it a peer to peer app, avoiding the need to host my own server.



It seems like I have a few options, including the newish Multi-peer Connectivity framework, and Location services.



I was hoping someone who has experience writing peer to peer apps could direct me to what they think the most logical approach would be.



Additonal info:

*I am only looking to send text/small pictures (speed is not a priority)

*Detecting nearby (within a mile or so) geographically is the main goal

*Possibly communicate with Android devices (I know multi-peer connectivity lacks this)