Currently, there are an increasing number of elder. Their bodies deteriorate every day. The decadent body cause many problems in elder such as the accidents from body movement, slipping, falling etc. Helping the elder is an important issue. Because these problems are important matter of elder, They can not help oneself on their own, and it can be danger to life. Helping the elder need to be easy, comfortable and quick. Therefore, the development application are the part of technology that can help the elder easily. Researchers have developed this application on smart watch to help their elder that they risk problems in their body. The application works on smart watch by Vertical Speed Sensors. It can send a warning signal to the elder and their caretakers when they have problems.