Margin Guard

Trustworthy Shopify COGS and gross-margin quality control.

Install and open Margin Guard from its Shopify App Store listing or Shopify Admin. For security, this page never asks for a store domain.

• Reliable source data. Reconcile Shopify cost per item at variant level and expose every gap or anomaly.
• Exact money math. Store values as integer millionths and avoid floating-point rounding errors.
• Traceable overrides. Preserve locked manual costs and record before-and-after values in the audit trail.