Operate four random integers [1..13] with ,-,*,/ operators so that the end of result is 24. Features with displaying the problem difficulty, timer, providing one of answers.
v 1.5
- rename app name again... Frankly it was a surprise receiving the letter from some attorney;
- add background images.
v1.3
- rename app name to avoid conflict
v1.2
- Adjusted screen layouts for tablet and phone
- Use light theme
- Added record time for different difficult level
- Display calculation mid-steps
9Apps 4.9
