Hello! This is JP Pinchera, from MediaMask.
We can do it in 12 days, with a final product approved in the app store, if you wish.
We have extensive experience working with the Google Maps API.
We can do different ways for users to authenticate, using a simple signup/login process to a server application. We can provide a simple auth system, with users, so that way a user can see what other users have done on a map, how they have changed the markers.
The iOS application will communicate with the database that contains the users and maps through an API.
The design work will be done on the first days on the side while we work programming and setting up the structure on the server side from day 1. You will be able to skype/chat with our designer and with me to decide about your final needs for the map iOS app.
We are really looking forward hearing back from you about our bid.
Let us know by email or PM, if you have any doubts or questions about our bid.
Cheers,
JP Pinchera,
MediaMask, Inc.
Toronto, Canada