أربعة is a Saudi Arabian brand based in Riyadh, offering multiple services through its application. The app includes three main services: Used أربعة, Auctions أربعة, and Maintenance أربعة.

Used أربعة service allows users to buy certified, used devices from various global companies. Users can track their orders through notifications within the app or on the My Orders page.

Auctions أربعة service enables users to participate as sellers or buyers in auctions for a wide range of items, including vehicles. The app provides visual representations of the auctions with specific durations (day, week, month) and initial bid prices. Smart notification system alerts users about bid updates and auction status, enhancing the overall auction experience.