Retail media and local media both claim the basket
The retail media network, the CTV partner and the circular each report the same shopper. Nobody reports what was added in total.
Countlift for Retail & grocery
Countlift reads daily transactions and sales by store and separates what local media added from what loyalty, circulars and the season would have done anyway.
The problem
The retail media network, the CTV partner and the circular each report the same shopper. Nobody reports what was added in total.
Circular weeks, holidays and paydays all move store traffic. A campaign that overlaps them looks better than it was.
Most store sales never touch a tracked click. The POS is the only place the full effect shows up.
What you'll see
Extra transactions against matched stores without the media, not clicks or platform conversions. Sample data, not a customer result.
Suburban stores responded to CTV; dense urban stores didn’t. Keep CTV in the suburbs and test DOOH downtown.
How it works
Typical setup: Daily sales by store + media plan by market.
Native connectors where they exist; a daily file upload everywhere else.
Each market with media is measured against a MarketTwin™, a blend of matched markets without it. Every result gets a 95% range and a confidence grade. How the engine works →
Get suggested budget moves, a weekly Slack summary and a monthly Proof Report.
Moments it measures
Measure openings and remodels against a twin built from matched stores, and see how long the media effect lasts.
Run a regional promotion in some markets, hold others back, and read transactions and sales by store in both.
Run CTV in a few metros, hold the rest back, and read sales per store before committing to a national buy.
Channels it proves
Radio, billboards, mailers and creators are logged as spend by market and measured the same way.

FAQ
No. Countlift reads daily transactions and sales by store. No shopper IDs, loyalty numbers or basket details.
A retail media network reports on its own placements. Countlift compares stores that got any given media with matched stores that didn’t, so local and retail media are judged the same way.
Yes. More stores make for better twins. Results roll up by store, market and region.
No card. Daily transactions by store is all it takes.