Free tools

Calculators

Work out what to draw before you inject. They run in your browser: nothing you type is sent anywhere.

For planning only. Check every dose against your prescription, and ask your doctor or pharmacist if you're unsure.

Buy a licence

You'll pay with Bitcoin or Lightning on the next page. Your licence key appears as soon as the payment confirms.

Used only for BTCPay's payment notice, and to help find your order if you need support. Your licence key isn't emailed: copy it from the page when it appears.

New to bitcoin? How to pay, step by step