Not available yet
Push notifications and reminders.
Card payments and checkout. A cart can collect what someone wants to pick up, but no money moves.
Sending email, including password reset emails.
Working offline.
Custom code, custom layouts, or your own fonts. Apps use a fixed set of screens and components that we design and test.
If you ask anyway
The assistant tells you when something is not possible and suggests the closest thing that works. Your app does not change.