I am looking for a iOS/Android developer experienced with all phases of the app development process. The app will be similar to Tinder, and will also have Stripe, Yelp, Facebook, GPS, photo and backend server account storage and payment processing. The app must also be aesthetically pleasing and be able to scale. Given my brief description of the project, can you give me an estimate of how long and how much creating this will cost? If there's any additional information I can provide to you to make the estimate more accurate, please let me know.