Sento is a payment app that allows users to utilize the Beppu City Premium Vouchers, known as "Aeru-ken," through a digital voucher service. Developed by OEC Co. Ltd., this app can be used at participating Aeru-ken merchants.

With Sento, the aim is to create a platform that promotes the circulation of funds within Beppu City and enhances the local economy and citizens' well-being. In addition to Aeru-ken, Sento plans to implement various initiatives using the app to further achieve these goals.

As a lifestyle app, Sento provides a convenient and secure way for users to make payments using their digital vouchers. By supporting local businesses and encouraging the use of Aeru-ken, Sento contributes to the growth and prosperity of Beppu City.