Math School Written Calculation is a free Android app developed by zeitpark. It falls under the Education & Reference category and is suitable for anyone who wants to enhance their calculation skills.

The app offers various exercises for basic arithmetic calculations such as addition, subtraction, multiplication, and division. Users can generate new exercises with just a click, saving time and avoiding repetition. Additionally, users can choose the difficulty level of the exercises from very easy to very hard.

One of the unique features of the app is that it provides hints by showing the mistakes made during written calculations. This helps users to learn from their mistakes and improve their skills.

The app does not contain any advertising, making it an uninterrupted learning experience. After each training session, users receive a summary of their skills, allowing them to track their progress.

Overall, Math School Written Calculation is a useful app for anyone looking to enhance their calculation skills, and it is completely free to use.