Komodo Abacus is an app to practice Abacus (Japanese Soroban). The abacus will display a randomly generated problem and challenge you to solve it using the abacus. Use the Validate button to test your answer and the Reset button to reset and start over with a new problem. You can practice addition and subtraction problems up to five digits with this abacus.
The app comes with Settings screen to enable Timer and Sound and also choose the difficulty level based on number of digits.
Features:
-7 beads
-Addition, Subtraction and Multiplication arithmetic
-Generates random problems to be solved
-Ability to select from 1 to 5 digits for the generated questions.
-Ability to verify the answer using the Validate button
-Timer support that can be turned ON/OFF
- Additional motion based options for ease of use (swipe Right to Validate, swipe Left to Reset)