Are tags visible anywhere in the iPhone app? I’d like to set tags and/or review them on the app. I set them on desktop though don’t see them in my app.

Right now, tags aren't visible on the QuickBooks mobile app, heyjo.

You need to log into your QuickBooks account via a web browser, then use tags. I'm adding these articles to learn how to use this feature.

• What are tags and why should I use them?
• Tag transactions in QuickBooks Online.

Aside from  tags on the mobile app, there are also other features supported on each device. Check out this link: Compare mobile app features. It has a table that compares features.

Let me know if there's anything else you need about using tags in QuickBooks. I'm always right there whenever you have additional concerns.