Oisix is an official app for regular members of the Oisix ra daichi Inc. service. The app makes it easy to receive push notifications for order start and change deadlines and provides a smooth operation. The app offers more than 4,600 items that include vegetables, fruits, meat, fish, dairy products, and sweets. Every week, there are special features that showcase seasonal and discounted products. The app also provides access to the comprehensive online market called "Oichika," which offers over 1,000 items from 70 different brands.

This app requires registration with the Oisix service. Once registered, the app sends push notifications about the start and change deadline of the Oisix service. The app has a user-friendly category and search function that makes it easy to find desired food items. The app also has a simple management feature that allows users to keep track of their favorite and previous food orders. Users can also manage their delivery preferences, including changing the delivery time and address or canceling orders with ease.