app developer

I want to build a global app which allows consumers to look out for the nearest available location for whatever category of activity they are looking for. For example I want to build an app which can tell me the nearest Sushi restaurants or nearest nail salon. I want to make it user friendly for travelers and consumers around the world.
I want you to give me an estimated price quote for the app development and promotion. I do not have a confirmed budget yet, but we can discuss more in a virtual meeting or call. I will be waiting for your reply.