Seoul-based edutech startup Mathpresso announced that its math-solver app QANDA reached 1 billion questions solved by the app. The number of Thai users reached 320K - roughly 10% of the national K-12 population with smart phones in Thailand. Developed by Korea's leading edtech startup, Mathpresso, 'QANDA' is a mobile app that enables students of all levels to receive instant solutions and 1-on-1 support from some of the world's top-university tutors. Users can take a photo of a math problem, upload it to the app, and then its AI-based optical character recognition scan will find and solve it in five seconds. Since its launch in 2016, QANDA has solved over 1 billion problems submitted by students from over 50 countries.