What are the cost of mobile app development services in Calgary?

My friend and I started an online customizable gift store last year and the response was truly motivating. We made plans to expand the business a little and for that, we have made plans to launch a perfect mobile application for the customers to place the orders more conveniently. We need to set the budget to avail the app development services, and we need help with that. We are not sure how much will the iOS & Android app development company in Calgary cost for creating the application in high quality. We will be so thankful if anyone could guide us with the information of the rates of the mobile app development services in Calgary.