1tap mio is an Android application designed for seamless management of IIJmio coupons. It allows users to toggle the coupon status between ON and OFF with a single tap, making it a convenient tool for those using IIJmio's services. The app provides a straightforward interface without any advertisements, ensuring a distraction-free experience. Users can easily check the status of their coupons and remaining balance by double-tapping the app icon, which displays the information through toast notifications.

This application operates via the IIJmio Coupon Switch API, requiring users to log in with their mioID and password for initial access. The app is lightweight and does not include any operational settings or complex interfaces, making it suitable for users looking for simplicity. While it is not a widget, it functions similarly, allowing customization of the shortcut icon on the home screen. Users should note that it has only been tested with the minimum start plan, and issues may arise with other plans.