ByeolDoSa: Arithmetic Master

Key Features
1. Levels from Basic to Advanced
This app generates a variety of arithmetic questions across different levels, from basic to advanced. The number of digits is adjusted for each level, allowing you to select the specific area you want to practice.
2. Column Method Mode
The Column Method Mode enables you to easily calculate large numbers without the need for pencil and paper. You can practice anywhere, even away from your desk.
3. Test Record Summary
Your test records are stored persistently, allowing you to visualize your improvement through graphical presentations. For example, you can track how your calculation speed increases and see your progress over time.