Welcome to the QuickBooks Community, @klkkbk-me-com.
Being able to work both offline and online implies that you can collaborate on your documents from everywhere, at any time. I'm here to explain this further.
QuickBooks Online is a web-based accounting system for small businesses. As long as you have an internet connection, you can access it through your browser, desktop app, or mobile app. This means you won't be able to work on your books if you don't have an internet connection.
Moreover, QuickBooks Desktop is the best option if you need to use QuickBooks without an internet connection. It can be installed and downloaded on your computer. See this link below for your reference:
Get back to us if you have any other questions. I'm always here to help. Wishing you a good one!
