Promo Proof helps you estimate what remains after product costs, discounts, payment fees, shipping, and packaging—before a promotion goes live.
Install Promo Proof through its Shopify-owned installation link. After installation, open Shopify admin → Apps → Promo Proof. No separate account is required.
Open Shopify admin Read the guide
All current features are free: manual catalog sync for up to 5,000 active variants, 50 lines per basket, and 50 saved campaign snapshots per store. No app charges or external billing.
Promo Proof is read-only. It never edits prices or creates discounts. Results are estimates for your entered basket and assumptions, not a guarantee about live checkout or accounting profit. Use tax-exclusive inputs and verify your real promotion in Shopify.