Just coming from YNAB, one feature that was really cool was their credit card feature. I don't believe it pulled any additional data from credit card companies.
Basically, the app already knows the current credit card balance. As new transactions hit under that credit card account, the app subtracts that transaction amount from your primary checking account "available balance".
This would happen for every credit card account, automatically adjusting your "available balance" in your primary checking for each transaction regardless of credit card. This provides a much more real time of how much cash you really have "available" at any given point in time.
I find myself looking at my credit card balances, and constantly having to do math in my head (always dangerous) in order to make sure my "available balance" can cover my credit card spending.
May not be a big deal for those that have their spending 100% under control, but for those of us who are still working on getting to that level this automated tracking can be super helpful.
Even if you didn't change the "available balance" field, maybe there could be another field that displays "available balance after credit" or something.