The number of products that simplify people’s lives are increasing with the enormous development of the technology. Mobile devices have a great importance for the provision of communication which is one of the most significant need of human beings. Mobile devices have gone beyond to be used originally as a mobile phone purposes and they have begun to be used as a smartphone by taking in charge of computers. They are not only used for communication but also they are used like camera, photo camera, notebook, television and reminder. Google's Android platform is a widely anticipated open source operating system for mobile phones. Google’s Android Operating System (AOS) in mobile phones are still relatively new, however, AOS has been progressing quite rapidly. The increasing number of smartphone users has prepared the ground for the emergence of new ideas to make life easier. Recently, especially some applications in health sector have reflected one of the most important samples. Some of the mobile applications in this field used by humans are about hearing test, vision test, diabetes, pregnancy, and doctor appointment. This paper focuses on following of drugs, taken by patients, through mobile phones. The application running on the AOS provides the use of drugs on time with the alarm system. In addition to this, the application gives information (time, dosage, and name) about drugs by reading data matrix located on the medicine box. Thanks to visual and understandable interface and easy usage, many difficulties experienced in drug intake can be eliminated with this application. Finally, the percentage of drug intake on time can be increased in the future.