ABSTRACTObjective:To develop and validate a mobile application for health education about sepsis.Method:Methodological study composed of two stages. Firstly, information from the Latin American Sepsis Institute and Global Sepsis Alliance was used, followed by putting together, design and layout of the application, according to the agile development model proposed by Sommerville. In the second stage, content validation occurred with 20 health professionals with expertise in the areas of intensive care and sepsis, from the use of the Instrument for Validation of Educational Content in Health through analyzing objectives, structure and relevance; and it was considered valid the item with a minimum agreement of 80%, by binomial test.Results:The app presents 15 screens that encompass prevention measures, recognition and early identification of sepsis, illustrated by interactive images. Out of the 18 items evaluated in the validation process, the minimum agreement obtained was 0.95 and the average validation index was 0.99.Conclusion:The application was developed and considered valid by the referees regarding contents. Thus, it is an important technological resource for health education in prevention and early identification of sepsis.