I’m gonna give 4 stars. I believe this app does help students a lot but the problem is sometimes a question will be answered by “experts” and the answers would be incorrect. However I’d say 99% of the time the answers are correct but not everybody who claims to be an “expert” answers the problems incorrectly. It has happened to be twice and I have been using this app for almost a year now. Other than that this app does work.
