Hello, @KLHCPA.
Allow me to join the thread and help provide additional clarification about integrating apps to QuickBooks Online (QBO).
The trusted apps that can be integrated in QuickBooks are those apps that are listed under the App Center or those apps that can be search inside QuickBooks.
To check for the features and the application further, I'd recommend contacting the TreasurySoftware provider. This way, they'll able to discuss the application for you.
In case you have any other QuickBooks concerns in the future, you can always check this article: Help articles for QuickBooks Online.
Let me know if you have further questions by adding a comment below. I'll be right here to help.
