Some products are about to sell out, others are dead money, and telling which — and how much to buy — means a spreadsheet every week. Shelf OS reads your sales and stock and returns one buy list, sorted by what runs out first, with quantities that respect case packs and supplier minimums. Click any number to see the arithmetic in plain English. Set a budget and it allocates across your most urgent lines. Export supplier POs, barcode labels and a dead-stock report. Read-only: we never write.

• Buy list with a verdict: what runs out first, how much to order, from whom.
• Budget Mode allocates your spend across the most urgent reorders
• Printable supplier purchase orders and barcode label PDFs
• Every number shows its math — click any qty to see why
• Dead stock report: capital tied up + 30/60/90-day actions