A free app for Android, by Sumdog.

Sumdog is the world’s largest online learning platform for kids. We believe that every child should have the opportunity to explore the world around them and be curious about what they don’t know. We help them do this in a safe and secure environment with access to a vast range of educational games.

Our approach to education is based on the idea that every child has the potential to be a genius. If they can spend time in a relaxed and enjoyable environment with the right level of challenge, they will be able to enjoy learning.

We will never provide a grade or score. Instead, we want to help children explore the world around them and be curious about what they don’t know.