Privacy
Short version: this website doesn't collect anything.
This website
No cookies, no analytics, no tracking scripts, and no forms that send data to a server. The calculator runs entirely in your browser; the numbers you type never leave your device.
When you email me
If you email an invoice or usage export, I use it only to prepare your teardown and do the work you ask for. I don't share it, and I delete it on request. I never need write access to your accounts to review a bill.
Contact
Last updated 5 October 2026.