[watwut]

As someone who had to learn languages from textbooks back when it was the only thing that existed, it was massively ineffective way of learning.

The typical outcome was a person who spent a lot of effort and still was unable to do anything useful with the language after years (reading real book, watching movie, chatting).

[whyowhy3484939]

Notice I included interaction with people, but you're right. I think just using books is about equal to just using apps. Both won't get you there but books will get you further along the way.