在庫速報.com is the official free app that collects real-time inventory information for various online shopping sites, such as masks, alcohol disinfectants, and other products. The app displays the collected information in ascending order of unit price.

This app is highly recommended for those who have difficulty finding the inventory they need by visiting multiple shopping sites individually and want to see only the products available for purchase on one page. It is also helpful for those who want to compare products' unit prices fairly, as the quantity of the products may differ.

The app currently supports various categories of products, including masks, alcohol gel, and alcohol spray, and shopping sites, such as Amazon, Rakuten, Bic Camera, and Unicharm. The app promises to expand its product and site categories in the future.

If you encounter any problems or have any suggestions for improvement, please use the "Contact Us" feature by tapping on the settings icon located on the top right corner of the app.