Bundesländer lernen: MapApp is an Android application created by Nissis that offers an engaging way to learn the German states and their capitals. The app provides various learning options, such as a map view, a quiz game, and a flashcard system. The app's quiz game tests the user's knowledge of the German states and their capitals, and is customizable to help users focus on specific areas. The flashcard system uses a box system to keep track of the user's progress and helps users to focus on areas where they need more practice.

The app's interface is simple and user-friendly. The user can select different categories to learn the names of the states, the capitals, or both. The app is free to download and use, and it does not contain any distracting ads. The app also offers a premium version, Topografie Deutschland: MapApp, which provides additional features and content.

Overall, Bundesländer lernen: MapApp is an excellent educational resource for anyone who wants to learn the German states and their capitals in a fun and interactive way. The app's various features and customization options make it suitable for learners of all levels.