Privacy Policy
Last updated October 14, 2026
What we collect
- Calculator inputs. Single calculations run in your browser and aren't sent to us. Bulk files are sent to our server, processed in memory, and not stored.
- Payments. Stripe handles checkout and stores your name, email and payment details under its own privacy policy. We receive your Stripe customer ID and subscription status. We never see your full card number.
- One cookie. If you subscribe, we set a cookie holding your signed access key so Pro features work. We don't use advertising cookies.
- Server logs. Our host (Vercel) records standard request logs, such as IP address and pages requested, for security and troubleshooting.
What we don't do
We don't sell your data, and we don't share it except with the service providers above.
Your choices
You can sign out on any device from the Account page, cancel Pro in the billing portal, or email us to ask what we hold about you or to have it deleted.