Log in to your account, then view your boards under the Boards tab:

Viewing and Commenting on Board Items

To view a board, tap on it. While you cannot comment on a board as a whole, you can comment on board items. Once you open a board item, tap Leave a comment at the bottom of the screen to start typing your comment, then tap POST. When commenting on board items, @mentions function the same way that they do in prototype comments.

Sharing a Board
To share a board from the InVision iOS app, open the board and tap ••• at the top right, then tap Share Board to open your native mobile share menu: