fragFINN is a free app available for Android and iOS that provides an in-app browser for children to surf safely with mobile devices. It is specifically designed for children aged 6 to 12 years to protect them from inappropriate online content and to support their continuous education in the field of media literacy. The app is based on a whitelist of approximately 11,000 domains that have been checked by media education experts against a set of criteria for inclusion.

The fragFINN app provides a search engine for children, fragFINN.de, which uses Google technology, as well as selected editorial content such as surftips of the day, special topics, and news for kids. It is important to note that the app's home page and editorial content are provided in German, but the search engine can find content in English, French, Italian, and Polish. The app does not block other browsers, but the security and safety settings of smartphones and tablets can offer further protection, such as blocking certain apps or browsers.