App for only 1 company?

So if I pay for an app, I can only use it on one company even though it is just the same user?

You can use apps for unlimited companies.

Hi! If I buy an app and I have multiple companies with multiple users, will the other users assigned to my companies be able to access that app as well?

And just to clarify, I only have to purchase the app one time and will be able to install it in multiple companies?

Yes, for both questions.