Health and safety emergencies are unexpected situations that need immediate attention. Some mobile devices have emergency communication tools known as panic buttons, but these buttons cannot be personalized according to the emergency that arises. Taking into account the above, a technological solution was made that allows the communication of health or safety emergencies quickly and effectively. This solution has the name EBA (Emergency Button App) which allows to give immediate notification of emergencies from the cell phone, through the use of personalized and easily accessible panic buttons. The prototype of this application was carried out from an adaptation of the cascade methodology and allows the user to notify an emergency by sending / publishing predetermined messages with the current location via SMS, Facebook and WhatsApp. 18 functional and 2 non-functional requirements were obtained, which did not undergo changes throughout the development of the project. The application prototype was developed in Android Studio using the Kotlin and Java languages. The functionality tests of the prototype had 95% acceptance during the automatic tests and, out of 5 acceptance criteria determined to measure usability, only one was not accepted due to the results of the survey.