McKinsey PS Practice Test

UI very poor. I answered correctly but it turns out to be some error so it counts my score to be zero

Major Problem: it appears that the scoring system is buggy, as it marks answers that the user selected, and which the explanation indicates to be correct, as wrong. Moreover, the red X doesn't always appear next to the answer the user selected for a question he/she got wrong during review at the end. Overall: quality app/problem bank with good and challenging problems. It is a good, multifaceted way to improve your problem-solving skills that trains you to think and analyze like a consultant. Moreover, each scenario is like a handheld walkthrough of how one would crack a case in a real interview

Great practice test content, but it needs to be more mobile friendly. It is difficult to work through questions quickly and efficiently on the current phone format.