KidDiary is a mobile application developed by the National Electronics and Computer Technology Center (NECTEC) in collaboration with a network of pediatricians and specialists. It serves as a tool for parents to monitor and track the health and development of their children from birth to 19 years old. The app works through a server, allowing it to send notifications when it detects children at risk, giving them the opportunity to see a doctor and receive appropriate assessments and guidance for their age-appropriate development.

KidDiary is part of the KidDiary Platform, a nationwide database of children's health information. It connects data from homes (KidDiary), schools (KidDiary School), and hospitals (KidDiary Hospital) to ensure the holistic development of Thai children.

KidDiary has received two awards from the National Research Council of Thailand: The Best of Special Prize and Special Prize in the Social Innovation category at the 2015 Inventor's Day event.

Network partners include the Department of Health, Ratchakarun Development Institute, Department of Mental Health, Ministry of Public Health, Faculty of Medicine Ramathibodi Hospital, Faculty of Medicine Thammasat University, Chulabhorn Royal Academy, Institute of Child Health, National Institute for Child and Family Development, Institute of Nutrition, Mahidol University, Basic Education Commission, and the Department of Local Administration.