Who it is for
Sellers, agencies, and agents evaluating one completed or planned coupon/deal period against seller-supplied comparable baseline economics.
Delivery: usually a structured result, workbook, or ZIP depending on the tool.
How it stays safe
Friday performs arithmetic only on the comparable-period units, price, discount, and costs you supply. Unit lift is not causal attribution and scenario volume is not a forecast. Friday fetches no fees, returns, taxes, ad attribution, customer data, or account state; does not publish listings; and does not create, change, activate, or publish any coupon, deal, price, campaign, or listing. This is not accounting, tax, financial, pricing, or promotion advice.