Not necessarily. A CRUD app is an app whose primary capability is allowing the user to interact with a relational database for storing and retrieving records.

Not necessarily. A CRUD app is an app whose primary capability is allowing the user to interact with a relational database for storing and retrieving records. Google Search is one obvious example of a web app that has absolutely nothing to do with CRUD. It uses a search algorithm to search a massive priority-ranked data structure that represents an index of many millions of popular web pages.