Commenting on photos is an app feature that allows you to discuss and respond to photos. You can add comments to any photo in your Skylight circle, regardless of whether you sent it or not. Comments do not appear on the Frame.
Here’s what a comment looks like in the app:
Captioning photos is a Plus feature that allows you to add text descriptions to photos. Captions appear both on the Frame and in the mobile app. You can only add one caption per photo, and you can only add a caption retroactively if you are either the Frame owner or the user who sent the photo. To purchase Plus, click HERE.
Here’s what a caption looks like on the Frame:
Here’s what a caption looks like in the mobile app: