I'm happy to see you again here in the Community, @mjensen50.
I want to shed some light on your app integration concern for QuickBooks Online.
QuickBooks Online integrates with various third-party applications. That said, we have our QuickBooks App site, which contains the list of apps the is ready to use and be integrated with your QBO. All you have to do is to look for the app the suits best for your business.
However, we aren't able to recommend a specific app, but the sharing of ideas and experiences are always welcome in this forum. This helps the Community such an awesome place.
Should you ever have questions or need anything, I'm just a few clicks away. Have a lovely day!