Math Einstein is a digital flash card system that can be completely customized to the level of your child. You can set up custom preferences for each child and modify difficulty settings as they improve. Results can be reviewed later for patterns and to determine strengths and weakness. Preferences can be modified to attack weaknesses and promote mastery. The Professional Edition allows up to 50 users and provides additional tools to manage a large group of users. Users can be archived, data can be password protected, Quests may be edited or created, and the Professional settings tab is enabled.