When you add an expense, you will need to define this expense is charged to which credit card, or bank account, or it's paid from Cash. You can set up such accounts with easily recognized name, like Visa *** 1234, Cash, Checking *** 5678. You can then produce report for all expenses against one particular account.
Please login to the web version at https://www.foreceipt.com/ and follow the below screens to set up your own account list:
The account edit screen looks like the following: