Thanks for joining the QuickBooks Community, abau386252. We're more than happy to show you how you can turn off the in-App notifications there.
If you're using the QuickBooks Online Accounting & Expenses Mobile App, you can disble Mileage notifications by going to the Menu > Settings > then Notification Preferences.
If you'd like to disable all notifications for the QuickBooks App, you can visit your phones Settings > Notifications and Sounds > and then toggle off the notification button for the QBO App.
If you have any other questions for us once you give this a try, please don't hesitate to reach out and let us know. We'd be more than happy to help you.
