Let me first welcome you here in the Community, tom139.
Thanks for choosing QuickBooks to cater to your business needs.
Currently, viewing the inventory levels is unavailable on the mobile version of QuickBooks Online (QBO). As a workaround, you can open your QBO account via a regular browser and view the information.
I also recommend visiting our QuickBooks Blog from time to time. This way, you'll be able to stay current with all the product news and improvements.
For more details about which QuickBooks Online mobile app features are supported on mobile devices, I suggest checking out this article: Compare Mobile App Features.
Additionally, I've added an article that'll help you keep track of your best sellers, what’s on hand, and the cost of goods. This helps you stay updated on your business: Use Reports to See your Sales and Inventory Status.
In case you've got other QuickBooks related concerns, let us know so we'll be able to assist you.