The problem ExamApp solves

Download Report:
Students are able to download reports (as PDF) for every test they finish.

Leaderboard:
Students can view their current state with respect to their institutions / departments, etc and improve them to be on first place.

Challenges we ran into

Mouse Lock:
Students cannot move the mouse out of a box which contains Next and Submit button. For choosing the answers, they can use the keyboard.

Code Prettifier:
Students who are attending Programming based test can view their programming question that is well formatted with syntatc.