Addition and Subtraction Any Digit 1.0.0

Here is a simple app that will help anyone improve their math skills.

Features:

- Free and offline
- Suitable for any age
- Includes 3 basic operations: Add, Subtract and Multiply
- Set your own number range (sample: 1 to 3 or 20 to 2000 or 150 to 500 etc.)
- All numbers are randomly generated
- Simple design and less ads

Future updates:

- Add mods
- "Division"