マルイアプリ is a free lifestyle application designed for iPhone users. The app, developed by MARUI K.K., falls under the shopping category, offering various features to enhance the shopping experience. Users can easily browse through recommended products and special offers via digital flyers. Additionally, the app allows users to make notes on items of interest and view them later. Notably, the app offers a convenient digital stamp card feature where users can collect stamps based on their purchase amounts, eliminating the need for physical stamp cards.

The app also provides access to the user's MARUI card points, CoGCa electronic money balance, and transaction history. Users can stay updated with Marui's latest product recommendations, reservation plans, and special events. Furthermore, the app offers links to recipe sites for meal planning assistance and enables users to set preferred Marui stores to receive customized promotions and offers.