The number ranges and arithmetic operations can be set. You can also specify whether a transition to ten is allowed during addition and subtraction.
Problems that have already been solved correctly are less likely to be repeated.
There are statistics on the number of correctly and incorrectly solved problems. For ten correctly solved problems in a row, a symbolic bronze medal is awarded, for 20 problems in a row, a gold medal, and for 30, a silver medal. But only once a day. The idea is to practice every day until the desired medal is achieved, and that is enough. Over time, skills will improve.
To prevent children from spending so much time in front of the screen, a task list can also be exported for printing.
Various background images are available for personalization, but you can also upload your own.