Quakelog is an application assisting in earthquake analysis. The application collects and analyses kinematic sensors' data and if a seismic event is detected, sends the event's data to a backend server for further analysis. The application has settings for activity, background activity, data mode, and backend server information. The application is using location services .Quakelog was developed as a part of a master's thesis.Location services are used in the background to assure an accurate location is sent to the backend server when a seismic event is detected. Continued use of GPS running in the background can dramatically decrease battery life.