Variants and product families
Products sold in several colours or sizes are treated as one competitor, not as one per variant — for your product and for everyone else's.
A single Amazon product often exists as a dozen ASINs: one per colour, size or pack. They share a listing, share reviews, and compete as one thing. JustRanks treats them that way.
What this changes
In the competitor list. A rival selling the same basket in nine colours appears once, not nine times. Without this you would look at a page of ten competitors and be reading three.
In your own numbers. Whichever variant Amazon shows for a search, the placement counts for your product. You do not lose a ranking because a shopper's search happened to surface your grey version instead of your black one.
Why it is not simply the parent ASIN
Amazon does not publish the parent ASIN in search results. What appears is one variant, chosen by Amazon as the representative for that page — and Amazon swaps it. A family can be shown as its blue variant this week and its red one next week.
Taken at face value, that swap looks like a product disappearing and a new one appearing: a competitor's history would break in half, and your coverage would drop for reasons that have nothing to do with your ranking. JustRanks therefore keeps its own stable identity for each family and matches every variant it has ever seen back to it. The listing you see in the interface is whichever variant Amazon is currently showing, but the history behind it stays whole.
What you enter, what you see
You enter one child ASIN when you set the market up. That ASIN stays the one shown in your product list, because it is the one you recognise. Behind it, all measurements run on the family.
New variants added to a listing later are picked up automatically.