Boomerang is a receipt-based local rewards service operated by Boomerang Inc. It connects customers, neighborhood merchants, and local managers through points earned on purchases at participating stores. Customers pay as usual, photograph and upload their receipt through the web or Android app, and receive points after the merchant verifies the transaction. The app reads the store, amount, and date for review, while customers can check their rewards history and use accumulated points. Attendance activities, a roulette feature, and friend invitations offer additional ways to earn rewards.

For merchants, Boomerang offers an alternative to prepaid advertising: rewards are tied to verified purchases. Its merchant tools support receipt approval, visit and sales statistics, and promotion setup. Local managers can recommend neighborhood businesses, help recruit stores and manage events, monitor results, and earn rewards based on the performance of stores they oversee. Boomerang provides separate customer, merchant-management, and recruitment services. It also handles membership, partnership, and service inquiries by email. Company information lists Boomerang Inc. at an address in Seoul, South Korea.