Shopify can order a collection by price, by date, by best selling. It cannot sink the things nobody can buy. Aisle does — automatically, on a schedule you set.
Aisle is not on the Shopify App Store yet. It is being prepared for review.
Sorted 9 products. Three were sold out.
Native sorting gives you one rule at a time. Aisle combines them, and adds the one Shopify has never offered.
What is in stock stays where shoppers look. Sold-out products move to the bottom, or disappear from the collection until they are back.
Newest, cheapest, most expensive or best stocked — applied underneath the sold-out rule, not instead of it.
Every day, every hour, or every fifteen minutes. Run it by hand whenever you like, and read the log to see exactly what moved.
Most of what breaks a store comes from apps that reach further than they need to. Aisle reorders collections. That is all it can do, by design.
Enter the shop domain you installed it on.