Create an APP for WP7/8 to identify a location via map selection and store them in a library with some meta data and a picture. No online connection to server - just use of standard mobile devices. Detail spec is available on demand
10 freelancers are bidding on average $555 for this job
Seems to be an intersting work and good opportunity to show my Windws Phone skill to work with you in future as well, Hope to have long term work relation with you.