Pre-marriage counseling coupled with enriching the couple's relationships skills can lead to better relationships. New approaches and programs are being developed today to improve youth skills. Mobile app education is one of the new educational models in this field. The purpose of this study was to determine the effectiveness of mobile app intervention on knowledge, attitude and practice of youth for healthy marriage. Methods: This quasi-experimental study was conducted in 2019 on 88 young

more »

... e (44 couples) who were selected by convenience sampling from youth referred to the premarital counseling center of Falavarjan city (Isfahan). At first, the pre-marriage skills training and counseling app was designed and produced, then this app was installed on the intervention group's cellphone. Data were collected using questionnaire based on the content of the app and its validity and reliability were confirmed. Data were analyzed using SPSS (20) and paired t-test and independent t-test were applied. Results: The mean (SD) of couples' age was 21.11 (5.06) years. The results showed that after installation of educational consulting app in the intervention group, the mean score of knowledge (P = 0.001), attitude (P = 0.001), and practice (P = 0.001) after intervention were significantly higher than before the intervention. Conclusion: The results of the study showed that using mobile-based educational and counseling app increases couples' knowledge, attitude and practice in pre-marital education. Therefore, it is recommended that this type of education (mobile app) be used to promote pre-marriage education classes.