What are Apps?
Apps are fullscreen turnkey visuals that integrate with some third party for the information to display (ex. Twitter App). You will need to configure or authenticate your app with your login credentials and you're good to go.
Picture of the Twitter App
Apps Vs Boards
Apps are predesigned visuals, while boards, are created by you (the end user). Boards allow you to configure a full canvas and customize the visuals.
Did you know?
You can embed Apps within Boards.
Picture of the Weather App
Picture of a Board Canvas on the Board Editor