Background: The importance of providing education during the postpartum period may help mothers successfully pass through several important phases after delivering a birth. A Serious complication may occur if a mother fails to cope with the unexpected situation. Therefore, equipping mothers with sufficient knowledge and skills of self care is essential to avoid any risks that may happen during postpartum. Lack of knowledge and skills are two major problems that mothers usually face when doing self care. To tackle the problems, we have created an android based application called BUBI Care to facilitate a more dynamic transfer of knowledge to mothers. Research Method: This type of research is a quasi experimental research (quasiresearch) with a pretest-posttest design with a control group design. The research sample used in this study were 19 TM III pregnant women (gestational age ≥ 38 weeks) as many as 19 people in the treatment group and 19 people in the control group, which were in accordance with the inclusion criteria of the researcher, with the time the study was carried out from September to October 2020.. Data were collected through pretest and posttest using digital questionnaires and digital observation sheets. Data were analyzed using the Wilcoxon and testthe Mann Whitney test. Research Results: the findings indicated that there was a difference in the level of autonomy between the intervention group and the comparator group. The groups consist of respondents with breast care. The intervention group showed a mean score of 81.37 whereas the comparator group showed a mean score of 56.05, with a total of score difference 25.32. Furthermore, there was also a score difference between the intervention group of perineum care and its comparator group. The intervention group obtained a mean value of 78.95 while its comparator obtained a mean score of 49.26 with a total of score difference 29.69. An experiment on mothers who did postpartum exercises also showed a different mean score between the intervention and the comparator group. The intervention group obtained a mean score of 74.63 whereas the comparator group obtained a mean score of 50.53 with a total of score difference 24.01 points. In conclusion, there is a significant influence on the intervention groups in terms of the use of the android based health application. Conclusion: the study indicated that there was a difference in the level of knowledge gained by the intervention group before and after being trained about the use of the apps. However, this did not happen to the comparator group. On the other hand, both of the intervention and the comparator groups experienced the improvement of self care skills and the level of autonomy after being trained.