When the stock spreadsheet breaks — wrong counts, no history, five people editing the same file — you don’t need a bigger spreadsheet. You need a system built around how you actually move stock.
It was fine at 50 products. At 500, the numbers stopped matching. Someone overwrites someone else’s row. You can’t tell what sold when. And every workaround makes it more fragile, not less.
Off-the-shelf stock apps assume your business looks like everyone else’s. If yours has a quirk — a bundle, a consignment, a weird unit — a packaged app fights you. A custom one just handles it.