Mathe Klasse 2 - free is an educational app designed to help children practice their math exercises in an interactive and engaging way. With a focus on simple addition and subtraction up to one hundred, the app offers various difficulty levels to cater to different learning needs.

One of the unique features of the app is the virtual blackboard, where children can jot down their calculation steps. This allows for a more hands-on and visual learning experience. Additionally, the app includes a challenging puzzle that requires filling in numbers within the hundred range.

The app provides customization options through its menu, allowing users to adjust the number of exercises per session and the size of the virtual blackboard's pen. It's worth noting that the app only requires internet access for the "about me" page, which showcases the developer's other apps in the Play Store. No personal data is collected or transmitted by the app.

To create a distraction-free learning environment, the app does not feature any advertisements. This ensures that children can concentrate solely on their math exercises without any distractions. However, the free version does have some limitations compared to the Pro version. It lacks decimal calculations, does not include a confirmation sound for correct or incorrect answers, and displays reminder windows for the ad-free version.

Overall, Mathe Klasse 2 - free is a valuable educational tool for children to practice addition and subtraction in a fun and interactive way. Its customization options and focus on a distraction-free learning experience make it a worthwhile app for young learners.