[AI-based Cognitive therapy and diagnostic solution for all children] 6 years ago, three founders started DoBrain as a cognitive therapy curriculum for 6 developmentally delayed North Korean refugees. According to Save the Children, more than half of refugee children have cognitive and linguistic developmental delays. However, due to expensive treatment, more than 95% of these children are not able to get proper diagnosis and treatment. DoBrain is an AI-based app to diagnose and provide interventions for developmentally delayed children. Because DoBrain is mobile-based, it is easily accessible to children in refugee villages. In clinical trials, children who participated in DoBrain showed significant improvement and DoBrain can screen for developmental delays with an accuracy of 92.98%.