GrowMargin

Know if what you're selling is worth scaling — before ads or inventory. True profit after fees, live verdict, price floor. One-time. No subscriptions.

Know if what you're selling is worth scaling — before ads or inventory.

GrowMargin is a calm profit calculator for ecommerce sellers. Enter one listing's price and costs. See true profit after platform fees, shipping, and ads — plus a plain-English Healthy, Tight, or Loss-making verdict and a clear next step.

Works with Shopify, Etsy, Amazon FBA, and any custom store. No store sync. No accounting software. Just unit economics you control.

WHAT YOU GET

• Live profit and margin as you type • Healthy / Tight / Loss-making verdict with next step • Optional returns — true net per order placed • Price floor — minimum sell price for ~20% margin or break-even • Beginner insights (not spreadsheet jargon) • Save calculations and compare scenarios side by side • Decision-memo PDF (verdict, costs, what would fix this) • Pro: open an email draft in your mail app — you choose who to send • Pro: break-even ROAS / ACOS in plain language • Pro: more saves + your logo on PDFs

PLANS (ONE-TIME)

Basic — full calculators, verdict details, returns & price floor, insights, PDF, compare, up to 10 saves. Pro — everything in Basic, plus email draft, ROAS/ACOS marketing projections, compare with % change, up to 25 saves, logo on PDFs.

No subscription. No renewals. Pay once.

WHO IT'S FOR

Sellers on Etsy, Shopify, Amazon FBA, or their own store who need confidence before pricing, ads, or inventory — not enterprise dashboards.

Privacy: your numbers stay in your account. Manual inputs only.

Questions? Contact support via the email in App Store Connect.