Pierrotピエロ公式アプリ is a free lifestyle fashion app developed by Select Co.LTD for Android users. The app is designed to help women meet the concept of "a new me every day with the same daily routine." With the app, users can create stylish and trendy outfits that include basic items with a touch of trendiness, providing a clean and feminine look.

The app offers a wide range of services, including 365-day outfit coordination updates for those who may struggle with putting together outfits, latest trend information from the apparel staff, and the ability to shop online at the official store. The app has been featured in popular Japanese magazines such as STORY, CLASSY, GINGER, and andGIRL, and has provided costumes for famous celebrities, models, popular TV dramas, and variety shows.

With the app, users can easily purchase the clothes they desire, and it has become a hot topic on popular social media platforms such as Instagram, with popular Instagrammers and mommy bloggers as its main supporters. It is important to note that the app may not work correctly if the network environment is not optimal.