Abstract
Objective: To present the process of development and validation of an application to assist mothers in the care of children in the postoperative period of orthopedics. Methods: This is a methodological study, conducted with 8 nurses and 11 mothers. The process included evaluation of functioning, user interaction, speed and quality as criteria for judging the usability of the application. From the Likert scale, the variables were analyzed using the Cronbach's alpha coefficient and the agreement of the participants' responses by the Content Validity Index (CVI). Results: Among the responses, ten items performed well, with CVI score ranging from 0.84 to 1.00, highlighting item 6, which had the highest score; and only, item 3 presented CVI below that recommended by the literature, which is around 0.80. In assessing the reliability of the questionnaire, Cronbach's alpha of 0.906 was obtained, a result classified as “Very High”, showing that the items that made up the questionnaire are homogeneous. Conclusion: The degree of reliability and agreement used to validate the application, demonstrated that the product was considered valid, with an approval rate greater than 86% in both validation indexes.