re: If you no longer write checks, what do you use for a "check register"...

Google sheets. Make the wife use it too.

We save the most money per month when we both use it religiously to keep track of spending vs budget

I use Quicken. I have 12 credit cards and 3 bank accounts and it's nice to see everything in one place.

I still write checks and don't use a resister.
I have multiple accounts that sync with quickbooks, which also syncs to my other business tracking stuff like inventory.
I use it for personal and business then seperate the two in the program.

I've used a checkbook app on my phone.

Does anyone know if you can use a rewards credit card to make mortgage payments?