This document summarizes a total reading approach project for children in Cambodia using a Smart4Kids reading application. It was implemented in 8 schools across 2 provinces with about 2000 students in grades 1 and 2 from 2012-2014. The project used short reading benchmarks, literacy coaches, a rapid response system including a reading toolkit and mobile app, and parental engagement tools to systematically respond to children's literacy needs. It also describes the development process for the Khmer language mobile application, which included global pedagogical approaches adapted for local contexts through collaborative content creation. Challenges included accommodating the Khmer script and a lack of flexibility in the app design.