Abstract-In the first place, my memoir is to make an android app for personal diary. In addition, many of us does not have time to write diary. By using this app we can update our diary at anywhere, any time.Equally important, any number of users can use this app. Each person’s diary will be maintained with secure password. Each person can create edit and delete diary notes whenever they wish. With this intention, this automated system makes the human work easier. As a result, Security level was high when comparing to existing system. Multiple users can use the app in single mobile.