The Case Interview Academy gave me an amazing experience with case interviews. The cases are complete and very well crafted, with clear and direct to the point instructions. The app will add a lot of value even to the most experienced applicants.

Regardless of one's background, Flavio provides a comprehensive tailor-made mentoring program, focusing on good methods and consistency

This app was what I was looking for: a trustworthy source of case interview best-practices and exercises. Frameworks are the best I´ve ever seen.

If you want to go way beyond Victor Cheng, this is the right thing for you. I learned more in one day with The Case Interview Academy than after reading entire books about case interviews. 

I used the app while preparing for my Summer Internship in my MBA and managed to pass to second round on MBB. The app helps significantly when you don't have a partner available. It is vastly superior than trying to do a regular case alone, as the app forces you to develop good habits steps such as explaining your steps/structures/calculations, which you can then benchmark against provided standards. Overall, great app and resource for preparing.