Numerator pioneered the blend of line‑item receipt uploads and shopper surveys, giving brands a rare peek into both what shoppers bought and why. Its promo‑uplift curves, Trip Mission flags, and coupon‑redemption metrics remain staples in CPG war rooms. Yet 2025 analytics stacks demand more: day‑zero sales confirmation, debit‑inclusive coverage, open‑feed delivery, and scalable privacy compliance. Those requirements expose three structural constraints—opt‑in bias, lag, and closed delivery models—prompting many teams to pair Numerator’s attitudinal colour with census‑balanced, one‑day‑lag transaction feeds such as Facteus.

This guide follows our seven‑point evaluation framework, deepens each criterion with reviewer quotes and audit stats, and then compares Numerator to the most common complementary providers.