Introduction
’ HL, HL
Development of the future population depends on the health of today’s children. Investment in preventive health such as child health supervision since early childhood results in better health outcomes [Parents’ health literacy (HL) affects their ability to use health information to make health decisions for their children [Digital interventions have been used to improve parents’ HL with high satisfaction [While more parents turn to online resources including mobile apps for childcare, apps have been critiqued for credibility and quality [KhunLook is a Thai mobile app developed to assist parents in assessing and keeping track of their child’s health in complement to the Maternal and Child Health Handbook (MCHH) [KhunLook was conceived with HL-informed strategies such as simplifying, chunking, organizing, and limiting information as well as including short written information and picture graphics [This trial focuses on the effectiveness of using the KhunLook app with the MCHH and standard care (intervention) compared with the conventional MCHH and standard care (control) on parents’ HL, immediate (visit 1) and intermediate (visit 2) accuracy of parents’ assessment of their child’s health in addition to growth, and convenience of use in the well-child clinic.