Your collection's value
One figure at the top, refreshed every night, and what moved it. Pro adds the graph and Profit.
The figure at the top of your collection is its market value: every card you own at its current quote, in your currency. It is refreshed each night when prices are read. Flip the figure to see which cards moved it today and by how much.
Cards quoted only in the other currency are shown converted on their sheet but left out of the total, and the total says how many. A card with no quote today keeps yesterday's in the total, and says so.
Zukan Pro adds the portfolio graph over time and Profit, the value of your collection against what you paid for it, card by card, from the prices you entered.