My daughter absolutely LOVED this app! She learned a lot and enjoyed the game (knowledge based tests) at the end of each segment. The knowledge base is deep, but with clear, simple language that can engage children of many ages, not just younger ones. It is great scope since it weave together reading, science and math goals. My daughter has a physical disability and she was able to do some of the things with help, but she would have been content listening to the stories and watching someone try to compete in the timed games and see how they scored. The printed stats when done is great way to track progress and comprehension. Looking forward to more like this!