Is it possible to create a report in one app using a table from another app?

If all users have access to both apps, you can do a "webpage" widget on a dashboard.

If the data needs to inter-relate you will want to either use "cross-app" relationships, or a QB to QB Sync table to get all the data into one spot.

Can you describe your use case and what type of data you are working with, and we can provide even more help/direction if needed.