Kakao Taxi is the most popular cab-hailing app in South Korea, dominating 98 percent of the market this year. UberTaxi came in a second with 11 percent.

Market analysis company Open Survey polled 1,500 smartphone users between 20 through 40 to find out which online-to-offline apps they use the most for specific needs. Multiple selections were allowed in the survey.

For food delivery, the most used app is Baedal Minjok with 80 percent. It was closely followed by Yogiyo with 72 percent. Baedaltong was third with 48 percent.