Yes — unless you’ve already got it all figured out and are completely happy with your grades. Then you don’t need the app.
But if you feel you’re still missing the bigger picture, the app helps you grasp the whole concept. It brings structure to your knowledge and explains the connections that are often overlooked in class. This way you fill knowledge gaps and finally understand how everything logically fits together.
Best of all: most users experience ‘aha’ moments after just a short time, even if they already know a thing or two—why not give it a try? The first 12 chapters are free, after all.