I build Restock Forecast — reorder points worked out from your own sales, purchase orders with freight and duty spread across the lines, receiving that writes quantities back to Shopify, barcode stocktakes, and a delivery-by-delivery cost history Shopify does not keep.

Free for 50 products. Paid plans from $4.99/mo.

What it does not do: import Stocky data directly (suppliers and reorder points come in by CSV), tell you which physical units came from which delivery, or work anywhere but Shopify.

I mostly post here about the arithmetic behind reorder logic and where it quietly breaks.