Evobilis is a web design firm that builds mobile applications for clients in the United States and Canada. This company employs experts in open source programming and software engineering, which are specialties that are essential for web and app development. Evobilis has staff members who are fluent in more than a dozen computer programming languages. However, only a few scripts have to be utilized to build the framework of an app for the iPhone. Swift is a language that defines the behavior of just about any app that is optimized for the iOS platform. This syntax can be easily mixed with Objective-C in order to boost the performance of an iPhone app. Evobilis also emphasizes the importance of using reliable web hosting to support the back end of mobile apps. Databases need to be set up to store documents and files that must be accessible to app users in real time.