Having linked the desirability of a smartphone to applications, it automatically becomes apparent why some of the fastest growing businesses like Uber, Airbnb, Travel Mate and so onhave come to give so much importance to mobile applications. This is also why the mobile application industry is expected to reach a turnover of around $189 billion by 2020.

But where do these mobile applications come from? Do smartphone producers add them to the app store themselves so users of those phones could use them? No. Mobile applications are created by applications developer that aim to achieve a certain purpose from their phone. This application then utilizes the phone interface in a way that achieves that purpose.