One payment · every Pro feature · forever

Own Pro. Never subscribe.

We built a product that tells you to stop paying for things monthly — charging you monthly forever would be a strange way to run it. Pay once, own every Pro feature for life, and keep the calculator free for everyone else.

Pro Lifetime
$99 once · founding price, $199 after launch

Honest disclosure: this used to be a thank-you tier that unlocked nothing. It now grants full Pro, permanently — and the founding price exists because early believers take the biggest leap. The calculator itself stays free for everyone, always.

Why we charge for this

Free consumer tools die quietly when nobody pays for the servers, the domains, the font subsetting, the Stripe webhooks at 3am. The calculator costs a few dollars a month to keep running today. As traffic grows, that goes up. A handful of lifetime supporters means we never have to add a paywall to the verdict.

If you'd rather not pay — totally fine. Use the calculator, share it with friends, embed it on your blog. That's the deal.