Sprout Studio helps you understand your business at a whole new level by using tracking technology to see whether or not your client has viewed certain items, such as their gallery.
Go to the Edit Gallery page and you'll notice in the top header there is a Stats button:
If anyone has viewed the gallery, you can click on the Views button inside the Stats menu and see the following details for each of the views:
Date it was viewed at.
Device it was viewed on.
Browser it was viewed from.
IP Address it was viewed on.
Note: If you are logged in as the photographer and go to preview the gallery, it will not count you as a "view" and will not track you.