중구통 is a free Android app designed for electronic payments using local currency. It allows users to make purchases at affiliated stores through NFC cards or QR codes. The app simplifies the payment process with features such as real-time bank transfers and easy transaction tracking. Users can register for membership, enabling them to access their purchase and payment history conveniently.

The app requires optional permissions for certain features, such as accessing the camera for QR code scanning and uploading photos for merchant registration. However, users can still utilize the app's core functions without granting these permissions. Overall, 중구통 offers a user-friendly interface tailored for seamless electronic transactions in the local community.