Hello there!
I work for Appligator Company, based in Serbia. We provide quality apps on time. There are 3 members of the team, so the work may be done for less then a week, depending of the size of the project. We did several apps that are already on AppStore, all the screens, links and other info you can find on our website - appligator.me. Hope to hear from you with the details about the app.
All The Best!