Volume Delta indicator shows the difference between Bid volume and Ask volume.
Basically, it shows which side of the market participants (Buyers or Sellers) were more active in a certain period of time.
As we all know, the forex market is decentralized and therefore we do not have a reliable information about real volume.
We also do not know actual and historical values of the Bid volume (Sellers volume) and Ask volume (Buyers volume).
However, we can use tickcount volume of Bid and Ask prices to determine the activity of buyers and sellers! So, with our special algorithm we can get a very similar volume as in the futures market.
With this functionality, we are able to analyze the flow of buy and sell orders. As you'll see, it's a real Holy Grail!