The Basecone Spenser app has two modules, namely Invoice and Expense.  
In this article you will find more explanation on the difference between the two.

Activate the expense claim module in the Basecone Spenser app

Before a user can start using the expense module, the Spenser app setting needs to be enabled first in the user's settings. This setting can only be enabled by the Super user or Accountant. 

This can be enabled per user on the online application when you go to
Settings > Users > Actions (edit) > tab Settings

Did this answer your question?