Although we normally use our fingers to manipulate apps in the smart phone, that operation may not apply in some special situation e.g., checking information when holding your kids, driving, people with disability, etc. In those special scenarios, controlling the app with voice will make it much more convenient. In this study, we are trying to develop a tool to automatically map your voice to operations in mobile apps. You will work with one of my PhD students and me to deliver this exciting work which can be both published in academic and applied into the practice.