Hi Benjamin,
This original thread came in before I took over the Community as the Manager, and I'm sorry to see it didn't get a response then, but I have responded to the other thread on this issue here:
https://community.quickbase.com/quickbase/topics/remove-new-apps-tab-for-viewerWe don't currently have an option to disable this feature specifically or via a specific user role but it can be disabled, along with several other built in options via an applications Branding. If this is something that would be valuable to your use of Quick Base I would encourage you to post on our User Voice to show your interest, I posted some further information in the other thread as well. Thank you very much for your time today Benjamin.