...Cloud computing brings unprecedented sophistication to mobile applications and cloud4apps makes it possible for developers. cloud4apps services are accessed by native or web apps via REST-based APIs with data formatted as JSON or JSONP; this makes our services and data transmission very fast, lightweight and easy to be consumed from any app or web domain and by a mulitude of programming languages and platforms. cloud4apps services incorporate robust device security, data security, authentication, authorization, and transmission security to protect sensitive data in mobile applications.