Watchlist allows you to create a custom list of the shows you're most keen to see, and receive price drop alerts when ticket costs change. To add or remove items from Watchlist, just tap the bookmark icon on the show page.
You can easily check out your Watchlist by hitting the filter on the app - if you've bookmarked shows across various locations, you'll only be able to see the shows showing in the location your City filter is currently set to.