桑都ペイ is a free iPhone app developed by FELICA POCKET MARKETING INC. It falls under the category of Business & Productivity, specifically Finance. The app offers various features to make payments, search for affiliated stores, use coupons, and receive notifications.

The payment process is simple and can be done in two different ways depending on the store. With the user scan method, users can scan a QR code displayed at the store, enter the payment amount, and confirm the payment with the store staff. Alternatively, with the store scan method, users can have the store staff scan a QR code, enter the payment amount, and complete the transaction.

The app also provides a store search function, allowing users to search for affiliated stores based on location or business type. After searching, users can view the store's location on a map.

Additionally, users can take advantage of the coupon feature by showing the coupon to the store staff and completing the coupon redemption process.

Lastly, the app offers a notification feature, enabling users to receive updates and announcements from local authorities or stores directly within the app.

Please note that internet connectivity is required to use this app, and data charges may apply. Coupons may have different expiration dates and limitations, and the app's security is ensured through automatic authentication upon opening. Apple Inc. and Apple Japan Co., Ltd. are not involved in the gift information displayed in the app.