In Favro you have two different types of in house App Stores, the organizational App Store and the board App Store.
The organizational App Store is located in the avatar menu. This App store contains applications and integrations available on the organizational level. This means that when an application or an integration is enabled here you will be able to use it in all different collections, boards and backlogs through out your entire organization.
The second in house App Store is for your boards. You access this App Store through the hamburger menu of your boards. Apps enabled here is only enabled on a specific board. This means that you can use different apps on different boards depending on the needs of the project or the workflow being done on that specific board.