Learn the method for free. When a real project comes along, pay for the time it takes — no subscription, no auto-renewal, no surprise charges.
For learning QFD, coursework and a first House of Quality
For real products: a full four-stage cascade with no limits
or $249 for 12 months — save 28%.
One-time payment, no auto-renewal.
For engineering teams that need several seats and an invoice
A House of Quality is built for a specific project — a course assignment, a thesis, a new product — not opened every morning like email. So we sell access for a period of time: pay for the month your project needs, and nothing is charged after that. Six months later a new project comes up? Extend it in your profile and pick up where you left off.
No. You pay once for 30 days or for 12 months, and that’s it. There is no auto-renewal and your card is never charged again without you.
Nothing is deleted. Your account simply switches back to Free: all your documents stay in your library and you can still open them. Free plan limits apply again to new documents, stages and rows, and exports get the watermark back. You can extend Pro at any time from your profile.
No. The new period is added to the end of the current one.
By card, through our payment provider Robokassa. Prices are in US dollars; the charge itself is made in Russian rubles at our fixed exchange rate, so the amount on your bank statement may differ slightly after your bank’s conversion.
Yes. Email mail@qfdtool.com with the number of seats and your company details. We’ll send an invoice and activate the plan manually once it is paid.
Often, yes: 2 documents, 2 stages and 10 requirements by 10 characteristics per stage, with every analysis included. The only differences you’ll notice are the limits and the watermark on PDF and SVG exports.
No. Register with your email and start working on the Free plan right away.
Another question? Write to mail@qfdtool.com.