Micro-S is a tool-based mobile phone application for college students, which provides answers to after-school exercises in related disciplines of university education. Applications generally refer to mobile phones and tablets, which are usually divided into individual user applications and enterprise applications in object-oriented, and mainly include xap and appx of iOS, Android and windowsphone in mobile system classification.

Mobile phone software mainly refers to the software installed on smart phones, which improves the shortcomings and personalization of the original system. The main means to improve the functions of mobile phones and provide users with a richer experience. The operation of mobile phone software needs the corresponding mobile phone system. As of June 20 17/day, the main mobile phone systems are: Apple's iOS, Google's Android system, Saipan platform and Microsoft platform.