1. It does not happen for the premium versions of Addition, Multiplication and Division apps which I also purchased.Epsilon Developers don't care.
2. Uninstall all 3 versions after 3 minutes.Fantastic apps!!! With these apps' help my 4 year old sharpened his long addition, long subtraction, long multiplication and long division skills!!!Not how I was taught in elementary school.
3. Addition! I was never any good at basic arithmetic at school, if you couldn't keep up the nuns put you in remedial math, so I lost all interest.
4. I don't get what's the point.Many steps (drag and drop), GUI not good, only 1 exercise per session (demo?), time effiency zero, has to spend perhaps 1h but train maybe just 10-20 exercises.
5. I like how the subtraction tells you if you're right are wrong because the talking voice it's perfect for just me I love this alote ππππππToo many ads and difficult part is not working.
6. However, the button to purchase the premium version is still shown.
7. I love these mathematical quizzes, not only has my confidence boosted, but I have grasped the concept of long division as well.
8. I paid for the premium version and still asking to buy the premium version.
9. I purchased the premium version.
10. This app is very weird.Excellent practice app for long subtraction and addition.
11. By the way, you must repeatedly select training mode or learning mode then press go for each question.