Mobile applications have become essential as 80% of time on mobile devices is spent using apps. Mobile apps are distributed through app stores and available on smartphones, tablets and other devices. Websites are outdated so customers demand updated mobile apps that are easily accessible with a click. Some key types of mobile apps include paid apps, freemium apps, and free apps. Mobile apps are important for businesses to increase exposure, build loyalty, enhance branding and drive sales. When selecting a mobile app developer, factors like portfolio, culture, marketing expertise, and capabilities should be considered. Social Squared is an app development company that has created addictive apps like GET 75, Binary Puzzle and Modi Wins using technologies like Java and XML.