توضیحات:

There is no function to make quizzes.
Only 25 panels.
Touching 25 panels with 1 to 25 numbers turns red, green, white, blue, yellow.
The color of the panel does not change automatically, even with other color panels in the same color panel.
Touch the panel you want to change manually.
You can select yellow by slide the color selection button to the right.
You can select "DEL" and touch the panel to erase the color.
You can erase the color of all panels with "All Clear" in the menu item.
You can turn off the sound by erasing the "Sound" check in the menu item.