The comparator lets you see multiple items simultaneously and compare their market performance over time. You can add as many items to the comparator as you wish, there is no limit to it. The comparator shows a graphical representation of the revenue, sales, age and rating information for any item that you add. Each item that you add is assigned a different identifying color to easily distinguish it in the charts & graphs.
You can add an item to the comparator by clicking on the balance scale icon next to it in the Item Tracker. The balance scale icon will turn green, indicating that the item was added.
You can remove an item from the Comparator by clicking on the balance scale again. The balance scale icon will go back to being gray, indicating that the item has been removed from the comparator. You can also remove an item by clicking on the X icon next to it in the Comparator.
If you want to temporarily hide an item from the charts, but keep it in the Comparator, you can do so by clicking on the eye icon. Clicking on the eye icon again will make the item visible again.