Freeddo is a free messaging app to search or invite people for a coffee. You submit your place and invite firends to have a coffee or you may leave the invitation to everyone.
You can search in a map all the public invites for a free coffee and direct contact with the one offering the coffee. Before going you can chat with him/her and take a photo of you.
Hopefully the app will launch in a month.
You may see the app prototype here http://invis.io/EC1NCAN4J
If you would like to be informed when the app will be available contact me on dribbble or freeddoapp@gmail.com