Todo Math - Free
Compatibility: Requires iOS 9.0 or later for iPhone, iPad, and iPod touch & OS 5.0 or later for Android devices
Todo Math is free both in the Apple App Store and Google Play Store. Designed for kids in Pre-K through 2nd grade, Todo Math offers thousands of activities to keep students engaged with math. Through the activities, students are taught skills including counting, calculation, logic, geometry and telling time (clocks and calendars). Parents can choose from 7 different challenge levels for their child and the app offers a placement test if parents are unsure of which difficulty is right for their child. Additionally, Todo Math is aligned with the Common Core curriculum. With the free account, there is a limit on the number of daily activities that can be completed. Subscriptions are annual and pricey.