SFCD is a Web design firm that operates its main office in San Francisco, California. This agency has a major advantage when it comes to developing custom apps for some of the best mobile devices and platforms. After all, SFCD is located very close to the world HQ of Apple. Therefore, it makes perfect sense that this Web design agency likes to publish apps for iPhones, which are known as one of the all-time best-selling smartphones in the world. In order to polish and optimize apps for such popular mobile devices, the right source code has to be laid out in a coherent and logical way. The computer programmers and software engineers at SFCD know exactly what to do when it comes to coding and scripting syntax for the iOS platform that is installed on Apple iPhones. The agency's experts deploy HTML, PHP, jQuery and C+ on the back end of apps for such smartphones.