Android-DE

Android-DE is a software development enterprise that specialises in educational applications designed to improve numeracy and mental arithmetic skills.

Our apps are suitable for both young learners and adults who wish to strengthen their confidence with numbers. Teachers may also find them useful in the classroom as quick lesson starters or end-of-lesson activities that encourage mental maths practice.

Mathpuzzler is the mental arithmetic puzzle app developed by Android-DE.

Mathpuzzler

Magic Squares

Mathpuzzler mental arithmetic app icon

Mathpuzzler generates continuous arithmetic puzzles using the four basic operations: +, −, × and ÷. Each puzzle is randomly generated, providing unlimited practice in mental arithmetic.

Icon for Magic Square App.

Magic Squares have the unique property that the numbers in each row, column and diagonal always add up to the same value, known as the magic number. In this example, the magic number is 15.

First Steps

Need Help

We believe that the first step forward is recognising that poor numeracy can have an adverse effect on a person’s self-esteem and confidence when performing calculations in their head.

Improving mental calculation skills can have a positive impact on both learning and applying mathematics in everyday situations.

Our aim is to help young people and adults develop and strengthen their numeracy and mental arithmetic skills in a way that is engaging and enjoyable.

Please contact us if you have any questions about this website or related purchases. We will do our best to respond as soon as possible.

Comments and suggestions for improvements are always welcome.