Privacy Policy

Calculator inputs and saved notes

The fabric calculator runs in your browser. Its code does not send your stitch counts, fabric selections or margins to a calculation API or store them in a server-side calculator database. No registration or login is needed.

Copying, saving or printing a project note is an action you choose on your device. A saved note stays wherever you choose to save it; you control whether to keep, share or delete it.

Analytics and website requests

We have not added third-party analytics or advertising tools to the calculator. This does not mean that visiting the website involves no network data.

The site is hosted with ChatGPT Sites and delivered through Cloudflare. Loading and protecting the site involves requests to those services. Hosting and security providers may process technical request information, such as an IP address, browser information and request times, under their own practices.

For the providers’ privacy information, see the OpenAI Privacy Policy and Cloudflare Privacy Policy. Their technical records are separate from the calculation performed locally in your browser.

Payments and the planned PDF

Paid checkout for the planned USD $3.99 two-page printable PDF is not enabled on this website. When offered, payment will be handled through Waffo’s separate checkout. Review the payment provider’s privacy information there before submitting payment details.

The calculator does not ask for or collect payment card details. Order and delivery information will be explained before the paid product becomes available; this site currently provides no automatic paid-PDF download.

External services and updates

For privacy or website questions, email 15564412316@163.com. If you email us, your message includes your email address and any information you choose to include. Please share only what is needed for your question and do not send passwords, full card numbers or private account credentials.

If you follow a link to another website, that service’s own privacy practices apply. Changes to this notice will be published here with an updated date.