Proofmade

The free 30-day calculator no longer needs a login

Until today, our free "was" price calculator sat behind a Whop sign-up. For a free tool that was the wrong first step, so it now lives on a plain web page:

English: https://proofmade.netlify.app/calculator/?utm_source=whop-store&utm_campaign=nologin

Deutsch: https://proofmade.netlify.app/rechner/?utm_source=whop-store&utm_campaign=nologin

You type every price you charged in the 30 days before your sale, your sale price, and the "was" price you planned. It shows the "was" price the EU 30-day rule points to and your real % off, rounded down. Nothing you type leaves the page, and the site sets no cookies.

Why this month: in an EU check of 314 online shops around Black Friday and Cyber Monday 2025, 30% based their discounts on the wrong price (European Commission, 26 Mar 2026). For a sale on Friday 27 November, the 30 days run from 28 October to 26 November.

Every claim we use, with its source and the date we checked it: https://proofmade.netlify.app/sources/?utm_source=whop-store&utm_campaign=nologin

A calculator, not legal advice. Rules and exceptions differ by country.

Fixed: Black Friday Price Check v1.1

If you typed a price with a comma (29,90), Chrome left the field empty and the tool asked you to fill it in again. Prices like 29,90, 1.299,00 and 1,299.00 now all work. I also added a note on Norway's 30-day rule (prisopplysningsforskriften § 9a).

Buyers: download the new file from your access page. Not legal advice.

New and free: the 30-Day Was-Price Calculator.

If you sell to EU or Norway buyers, your Black Friday "was" price must be the lowest price you charged in the 30 days before the sale. Type your recent prices and your sale price, and it shows the honest "was" price and the real % off. One minute, works offline, nothing is sent anywhere.

Find it under Products. Not legal advice.

Proofmade is open. Three things to start with:

1. Free guide: How to Make Digital Products With AI That Sell. Five short lessons on getting proof before you build.

2. Proof Check ($19): score your product idea in one evening. Every point needs a real link, so the verdict means something.

3. Black Friday Price Check ($9): check your 'was' price and % off before Black Friday on 27 November. Five minutes.

Questions or stuck? Message me here. I reply within 48 hours.