https://www.chess.com/practice/drills There are multiple paths, including attacking, defending and imbalances.
The apps and the website have always been developed by separate teams. Sometimes things are developed first for one or the other.
If you post a screenshot,it will be easier to locate the comparable feature.
My friend and I were trying to do some exercises earlier today.
He asked me to go to drills->advantages, which I could not find.
It turns out he was using the app on an ipad and I was using the website using Chrome on a laptop. We think it just isn't available on the website.
Is this intentional?