I'd like to share information about QuickBooks Online app integration.
If you want to sync the QuickBooks Online app and browser versions, please note the following:
The QuickBooks Online app and QuickBooks Online on the web are constantly in sync.
Any work you do or data you enter in the app appears on the web, and vice versa.
Your data is always up-to-date and accessible, regardless of where you choose to work.
To avoid issues, make sure that you have the right app downloaded and the same as the login.
On the other hand, if you want to integrate the app into QBO, then you'll have to do it on the browser. If not you can contact a third-party service provider for assistance.