The only reason you’d use this awful app is if you were forced to.
I am not kidding, it is so HORRIBLE to use this I’d rather be tortured. Alright, several months later I’m writing this part! Surely it must have improved? Nope. Not only is it extremely buggy, it’s also IMPOSSIBLE to exit a test without submitting it for some reason. I accidentally went onto another test and had to submit that to do another one. 10 minutes lost and a free 0 for me!