When you first run ATO Logbook, you will see this opening screen. If you want to use the app to log your drive using GPS, you need to ‘allow while using app’. GPS is required for access to your location when driving.
If you enter in the drive time and distance yourself, then you do not need, and can select ‘don’t allow’.
If you find that you do want the app to track your journey, but you didn’t select always allow, you can chance it later. Go to the settings screen > Privacy > Location Services. Then click on the logbook app, and change the settings to ‘always’.