Stunting remains a national priority health issue due to its impact on physical growth, cognitive development, productivity, and the quality of future human resources. Health cadres play a strategic role in stunting prevention through education, outreach, and community support. However, limited access to engaging and accessible educational media often hinders the delivery of information to the public. This activity aims to improve the knowledge and capacity of health cadres in stunting prevention efforts by utilizing the Si Ceting application as an information and education medium. The methods used include outreach, demonstrations of application usage, support, and evaluation through pre- and post-tests. The material provided includes the definition of stunting, stunting prevention in adolescence, pregnant women, infants aged 0–6 months, children aged 6–24 months, the environment and parenting patterns, and monitoring child growth and development. The results of the activity showed an increase in cadre knowledge after participating in training and using the Si Ceting application. The average cadre knowledge score increased from 96 in the pre-test to 98.19 in the post-test. Furthermore, health cadres expressed high enthusiasm for using the app as an educational tool due to its ease of use, comprehensive material, and support for educational videos and child growth and development monitoring features. It can be concluded that the use of the Si Ceting app is effective in increasing the capacity and knowledge of health cadres regarding stunting prevention. This app has the potential to become a digital educational tool that supports health promotion and stunting prevention activities in the community. Keywords: Stunting, health cadres, Si Ceting
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