AppSheet Workspace Integrations (such as inside Sheets and Drive) are expected to have screen reader support.
Images should have descriptive text, the ability to use keyboard shortcuts similar to a standard website, and sufficiently descriptive text.
To move around, use "Tab" to select the different menu buttons and text and "Enter" to activate the button. In addition, you should be familiar with how to modify a spreadsheet in order to prepare your sheet for use within AppSheet.
How to setup a screen reader
If you think there is a bug related to accessibility, such as insufficiently descriptive text, please report it to support with a mention of "Accessibility".