The Korea Herald

A Seoul student's shade-routing app topped Apple's navigation chart

During South Korea's record summer heat, a 23-year-old Seoul National University student released Geuneullo, an app that works out where buildings and street trees cast shade and recommends the shadiest walking route. He built it from OpenStreetMap and public…During South Korea's record summer heat, a 23-year-old Seoul National University student released Geuneullo, an app that works out where buildings and street trees cast shade and recommends the shadiest walking route. He built it from OpenStreetMap and public…Expert summary pending. Showing the newcomer version.