Hello!
We are a team of two developers. As we see you want an app with GPS, chat and capture photo. We have worked a lot with these features. We can do the version for iPhone and iPad for you for $400. Please, view our portfolio to see samples of our apps https://www.freelancer.com/u/ashuevandrey05.html. (pay attention to the app Running trainer, where we implemented gps functions. The app trains a user to run a marathon and shows tracks the user on a map). We have also completed a project in freelance connected with gps, you can view the feedback for this project (there a user goes to a particular coordinate and receives a push notification that says that he is in the point. Then the app also saves the time it took a user to get there.)
We have 5+ years experience in coding for iOS and mastered Objective C and Swift, we will do everything quickly and at high quality. Ready to work for 8 hours per day, start straight away and provide instant support and builds each week.
Feel free to ask any questions.
Best regards,
Andrey