The Most-Shopped Retailers Index

Methodology

How SimplyCodes verifies codes. Behind every figure in this live data study is the SimplyCodes verification system. Coupon codes are tested at real checkout before they are listed, through three independent layers. Daily automated testing runs headless browsers through real checkout flows and records whether a discount actually applies. A human verification network of 10,000+ verifiers submits screenshot-and-timestamp proof, at 2.3M+ monthly code verifications and 98% accuracy. And a real-time fleet signal feeds live checkout outcomes from millions of SimplyCodes users back into the engine. Each code carries a Health Score from 0–100, weighted by checkout outcomes, verifier consensus, and recency. With an estimated 40–60% of coupon codes on the public web dead, restricted, or fake, the system exists so a code earns its place by working at checkout, not by being collected.

How this study is built. We sum each store's code copies over a trailing 7 days across Web, Mobile App and Extension, rank the top 30, and compute week-over-week change against the prior 7 days for stores clearing a 500-copy floor. A small editorial exclusion removes checkout proxies, and we apply a bot cap — any store averaging more than six copies per shopper is dropped as automation, not organic demand. The as-of date is the latest available data day, which lags about a day, so the figure is never dated to today. This is a leaders-only board measuring demand (codes shoppers grabbed), never code reliability, and it refreshes daily.

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