国産食べて全国制覇 is a free lifestyle app developed by Z-BS INC. for iPhone users. This app allows users to create their own map of locally produced ingredients as they explore and enjoy delicious Japanese food.

With this app, users can register the Japanese ingredients they have eaten or purchased. By registering ingredients, the app tracks the user's conquest rate for each prefecture, indicating how many locally produced ingredients they have tried. The goal is to register as many ingredients as possible and aim for nationwide conquest.

The app offers several features, including the ability to register ingredients with the option to add dates and comments. As users register more ingredients, the app colors the map of Japan, showing the conquest rate for each region and category. Users can also view their registered ingredients in a list format, filterable by prefecture and category (vegetables, fruits, rice, livestock, and others). The app also includes quizzes about Japanese ingredients and provides a collection of useful links related to locally produced food.

Please note that the app requires iOS 13 or above to run smoothly. For more information, you can refer to the app's terms of service and privacy policy on their official website.