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DealIndex .ai
Every deal price-checked against 90 days of real data. No sponsored deals. No fake discounts.

Methodology › changelog

Methodology changelog

Every rule change — a threshold, a weight, a definition — bumps the version number. Historical reports remain governed by the methodology version in force at their publication.

2026-05-01

v1.0 — Initial publication

First public release of the DealIndex methodology. Establishes the definitions for real price drops, fake-deal detection, retailer quality score weights, the year-1 seasonality protocol, and the right-of-reply process. Published alongside the April 2026 Price Report.