Most inventory tools forecast on gross sales. For apparel that is wrong in a costly way: the sizes that sell most are often the sizes that come back most, so you reorder more of what you already have too much of. Sizecurve builds each style's size curve from demand net of returns, then tells you what to reorder in which sizes. It also flags broken size runs, where core sizes have sold out and the leftover units cannot really sell. Read-only. It never writes to your store.

• Size curves built per style from demand net of returns, not gross sales
• Broken size runs flagged while the leftover stock can still be rescued
• Reorder quantities by size, covering lead time and what is already on order
• Styles too new to forecast borrow a curve and say so on every line
• Read-only: reads what sold, in which size, and never who bought it.