Welcome to the Community, @drcarlyle61,
Allow me to share some insights about the QuickBooks application using different devices. The app for Apple tablets (iPad) and mobile phones is a simplified version of QuickBooks Online (QBO). This means some of the features vary when using QuickBooks from the computer.
For detailed information, please visit: Compare mobile app features.
I'll also add an article you can refer to for future use if you want to learn how to add notes to your transactions: Add a note to a transaction in the QuickBooks Online app (iOS only).
However, if you're referring to something else, please don't hesitate to leave a reply so I can assist you appropriately. Have a great day!