Which free calculator answers your question?
Five free tools for store owners, with no sign-up: profit margin, break-even ROAS, payment fees, the real cost of Shopify, and an AI agent readiness check. Every calculator shows its formula, the source of each rate, and what it leaves out.
| Tool | What it answers |
|---|---|
| Profit margin calculator | What you keep from a sale after cost, fees and shipping, and the price that reaches the margin you want. |
| Break-even ROAS calculator | The ROAS at which your ads start making money, and the most you can pay for an order. |
| Payment fee calculator | What a card payment costs on Stripe, PayPal and Shopify Payments, with the platform’s fee on top. |
| Shopify fee calculator | The whole monthly Shopify bill: plan, fee, card processing and apps, beside the same store on Waise. |
| Agent-ready checker | Whether AI shopping agents can read and understand your store. |
How these tools are built
- The default result is written into the page, so you can read it without JavaScript.
- The calculators run in your browser, with no AI and no numbers sent anywhere.
- Each formula is written out, so you can check it yourself.
Who this suits, and who it doesn’t
A good fit
- Store owners who want a quick, clear number before changing a price or raising an ad budget.
Pick something else
- Anyone who needs accounting reports or tax advice. These are estimates, not a substitute for an accountant.
Questions
Do I need an account to use these?
No. The calculators run in your browser with no account and no card, and the numbers you enter are not sent to us.
Where do the rates come from?
From each company’s official pages. Every rate has its source and the date we checked it.
Can I set my prices from the result?
It’s a good starting point. It counts only what you enter, and each calculator lists what it leaves out, such as returns and tax.
The online store that runs itself, with brakes
- AI that acts, with brakes. Pulse changes orders, prices, discounts and content from one conversation. A sensitive change first shows a before-and-after card and waits for your approval, and almost any change can be undone.
- Your money is protected on the server, not by a promise. Anything touching money needs a confirmation tied to the exact values you saw, and the margin guard blocks a price below your minimum, even when an outside AI asks for it.
- Profit, not just sales. An order counts only once your payment provider confirms the money, and profit is worked out after fees, shipping, cost of goods and refunds.
- Open to your own AI. Claude, ChatGPT or Gemini connect to your store over MCP and pass through exactly the same brakes.
- Five ways to build, one system behind them. A ready theme, designing by chat with Pulse, your own code, outside builders like Lovable or Webflow, or your own AI. Checkout, orders, customers and money stay in one place.
- 0% of your sales. One flat monthly plan. When your store grows, our cut doesn’t, because there isn’t one.
- Built by someone who sold. Or Avrahami, a practical electronics and computer engineer, ran an online store on Shopify and built what that store needed. That became Waise.
Sources
Every competitor figure on this page was checked on its official page, on the date beside the source.
- www.shopify.com/pricing Shopify’s price list, used by the fee calculators. Checked 2026-11-08
- stripe.com/pricing Stripe’s standard US rate, 2.9% + 30¢, is the example’s default fee. Checked 2026-11-08
Updated
Written and checked by Or Avrahami, Founder of Waise ·
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