The stars in this app are useless, please fix the bug.
This is a very good app, only that EVERY time you get stars and purchase something, your other things disappear. The books and writing and science are very good and educational, but the stars are completely WORTHLESS.
How I Use It
I'm not a teacher, but when students find out stars are WORTHLESS, they will be very disappointed. My son's stars keep disappearing, and he was very sad.