오피넷 - 싼 주유소 찾기 is a free app developed by Korea National Oil Corporation. It provides nationwide gas station price information from the 오피넷 website, now accessible on smartphones. Users can view detailed information such as product prices, gas station locations, and additional services like car wash facilities, self-service options, and discounts. The app offers various services including nearby gas stations, regional gas stations, route-based gas stations, and identification of illegal gas stations. Users can also access information on tax-free fuel stations and stations selling specific types of fuel.

The app menu includes features to check gas station prices and locations based on proximity, region, highways, travel routes, tax-free fuel stations, and specific fuel types. Users can also access detailed information about gas stations including addresses, phone numbers, car wash facilities, maintenance services, and filter options. Additionally, users can register favorite gas stations for quick and easy access, check daily fuel prices nationwide or by region, and access oil price trends on the app's homepage.