島村楽器モバイル is the official mobile app of Shimamura Gakki, a company that specializes in the sale of various musical instruments such as guitars and pianos, as well as the operation of practice studios and music schools across Japan. This app offers a range of features that make it easier for music enthusiasts to engage with the company's services.

With the app, users can accumulate "音マイレージ" (Sound Mileage) by presenting their app membership card (barcode) during checkout. The accumulated mileage can then be exchanged for special coupon rewards, which are available at certain milestone intervals. Additionally, the app provides exclusive coupons and delivers the latest information to users.

The main features of the app include the ability to easily check the accumulated mileage, exchange it for coupons, and receive exclusive coupons and the latest information. Users can also conveniently search for the nearest Shimamura Gakki store. To access all app functionalities, users are required to register for a membership.

Overall, 島村楽器モバイル is a convenient app for music enthusiasts who want to stay updated on the latest offers, accumulate mileage, and enjoy exclusive benefits when shopping for musical instruments and accessories at Shimamura Gakki stores.