The test is intended for primary school students and those who want to learn or test knowledge of the mathematical addition and subtraction tables.
- The test has two options:
  * simple, and
  * time limited.
- The test consists of 8 levels and each level consists of 8 questions.
- Questions are always asked randomly.
- 3 answer options + option "other"
- The correct answer is shown after each incorrectly answered question.
- At the end of the test, incorrect answers are shown on the addition /subtraction table.
- Clear interface
- Convenient design
- Support for multiple languages
- Free updates.

Permissions:
• INTERNET - for communication between the game and Google services.
• ACCESS_NETWORK_STATE - for the correct operation of AdMob ads.
• WRITE_EXTERNAL_STORAGE - "Share" function will use media store to save and share image with test final result.