Most stores don’t fail from bad products. They fail because nobody did the maths on fees, refunds, ad costs and payout delays. Store Profit OS is an offline web app that does that maths for every product you sell.

WHAT’S INSIDE
• Product catalog with unit economics: profit per order, net margin, break-even ad cost and break-even ROAS for every SKU and variant, after fees, refunds and ads.
• What-if scenarios: test price changes, supplier deals, rising ad costs and upsells, and see exactly how much more (or less) you keep.
• Price sensitivity: how many fewer sales a price rise can survive and still earn the same profit.
• Ad budget simulator: enter a budget and your cost per sale, or build it from CPM, click-through and conversion rate. See orders, revenue, ROAS, profit and the most you can afford to pay per sale.
• 12-month forecast: scale your budget month by month with rising ad costs and repeat buyers built in.
• Cash runway: a day-by-day simulation of payout delays, rolling reserves, supplier terms and ad billing that shows how much cash you need before launching.
• Backups, CSV import/export and printable reports.

WORKS WITH: Shopify, Whop, Stripe, PayPal or any checkout. Any currency.

YOU GET: the app (one HTML file, opens in any browser, no account or install, works offline, data stays on your device) plus a step-by-step setup guide (PDF).

PAIRS WITH: the Ecom Operating System workbook. One click exports your products into it.