In recent years, there are more and more mobile devices in our lives, no matter smart phones or tablets. Numerous software developers devoted have themselves to this market, and thus, the development of application programs on mobile devices becomes an important topic in software engineering. The main purpose for this research is on investigating method of developing application on mobile devices. Since methods of development on different mobile platforms are quite different, when there is a new demand of mobile application, the developers must prepare at least two versions of the apps. To solve this problem, we use the cross-platform program to develop the apps, which uses the same programing language such as HTML and JavaScript as the base language, and application program interfaces from PhoneGap Framework to build up the hardware devices functions on platforms. Because there may be problems of efficacy on cross-platform programs, we classify the mobile application into several kinds, and find the most suitable kind on developing cross-platform programs; also, analyze the characteristics of this kind of mobile applications. By doing these works, we finally can reduce costs on developing applications to solve the practical problems in our world.