App Muse

Mobile apps are important to make growth in business in the current industry. Earlier the day, websites and social media were the way to do brand promotion, but today mobile apps are the new business strategy. If you are a little bit confused about the cost then this is the fact that there is no public data on his actual cost of developing apps. But you can estimate it with common formula and knowing about functionality.
http://www.appmuse.com/appmusing/how-much-does-it-cost-to-develop-a-mobile-app/