IS플렉스 is a delivery service application designed for both part-time and full-time couriers, allowing users to work flexibly according to their schedules. It connects registered members with orders submitted by partner companies, enabling them to choose their preferred delivery method, which can include walking, bicycles, motorcycles, cars, or trucks. The app emphasizes convenience, allowing users to operate during their available hours while ensuring safety through automatic cargo insurance for items being delivered.

The application features an easy registration process, where users can sign up by agreeing to terms and verifying their identity through mobile authentication. Users can register their delivery methods, complete mandatory training, and accept orders based on their chosen transportation options. Additional functionalities include a recommendation system for nearby orders, an order list tailored to the user’s delivery method, and a point system for completed deliveries, which can be withdrawn as cash.