R21 vs MathDrillKindergarten

R21 is a new six-level reading series carefully designed to help young learners develop the skills they’ll need to succeed in the 21st century. Each book covers a range of topics and makes use of the latest Content and Language Integrated Learning (CLIL) methods to ensure they’ll appeal to young children and have a connection to children’s wider studies and experiences. With R21, reading is fun, inspiring as well as informative, and children will not only develop their reading competence but also become a great thinker in the 21st century.

This is a simple math drill but with multiple reward animations. There is no sound, no reading requirement, no keyboard entry (only button clicks). The app starts with addition of numbers 1 through 5, then progresses to numbers adding up to 10, subtraction, missing addend, sequences, and greater-than/less-than comparisons. The child can view her number of correct answers, shown with an emoji for each one. If the child enters an incorrect answer, a hint image appears. After 2 incorrect answers, incorrect answer buttons become disabled on each further incorrect answer until only one is left. On a settings page (for adults but with no restrictions) children may be added by name and assigned a level 1 - 3. The name, level and the number of correct answers are stored on your device for future sessions. The app is free, and there are no ads. No Wi-Fi or cell signal is required.