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One account, for the assistant. Everything you calculate stays where it is.

• The calculators never need an account. Every calculation, the full working, the converter, the safety data and the reference tables stay open and run in your browser.
• An account exists for the assistant. Curie and the paper reader cost real money per question, so they need to know who is asking. That is the whole reason for this page.
• We store an id, your email’s domain, and two dates. Not your name, not your address, and never a password. Privacy lists every field.