Privacy policy

Only what the part of the site you use needs.

• Sign-in with Google (learning site). To open the learning site, learn.nanofuze.com, you sign in with your Google account. Google tells us your name, your email address (which it has verified) and a Google account number. We do not receive your password, your contacts or anything else, and we do not post to your account. We use this to keep you signed in and to turn away accounts that are not allowed in, and we keep a record of it (name, email address, Google account number, the first and last time you signed in and how many times) in our database.
• Server logs. Our web server records standard technical details of each request (IP address, time, page requested, browser type). We use them to keep the site secure and working, and keep them for a limited time, normally no more than 90 days.
• Messages you send. If you use the contact, tip or corrections form, we store the message, and the name and email address if you give them, so we can read and answer it. To limit spam we also keep your browser type and a one-way scrambled (hashed) form of your IP address, from which the address cannot be recovered.
• Newsletter. If the newsletter is available and you subscribe, we store your email address and when you confirmed it. You can unsubscribe with one click from any email.
• Page counts. Nanofuze also counts page views on its own server, without cookies and without storing IP addresses (we keep only a one-way daily code that cannot be linked across days), and uses them only for totals. Do Not Track and Global Privacy Control are honoured.
• The assistant (learning site). On learn.nanofuze.com, text you type, or speech your browser converts to text, is sent to our server so the assistant can answer. We do not store it. If you press the thumbs up or down on an answer, that rating is counted without your words.
• Visit statistics, only if you accept. Google Analytics records which pages you view, your approximate location (worked out from your IP address, which Google Analytics does not store), your browser and device type, and how you reached the site. It also records how the site is used: which links and buttons are clicked (their label and where they lead), how far down a page you scroll, that a search or a form was sent, that the assistant was opened or used, how fast pages load, and any errors. It uses two cookies to tell visits apart. What you type is never sent: not search words, not messages to the assistant, not the text or email address in a form. If you decline, none of this happens.

Voice input uses the speech recognition built into your browser. Your browser, not Nanofuze, receives the audio: in Chrome and Edge it is processed by the browser maker's speech service, and in Safari by Apple's. Nanofuze only ever receives the resulting text. In hands-free mode the browser listens while the switch is on and Nanofuze receives only what follows "Hey Nano".

Sign-in: it is needed to give you access to the site, and our legitimate interest in keeping the service secure. Server logs: our legitimate interest in running a secure service. Messages: our legitimate interest in answering you, or taking steps you asked for. Newsletter: your consent, which you can withdraw at any time. Visit statistics: your consent, which you can withdraw at any time with Cookie settings in the footer. If you are in the UK or the European Economic Area these are the legal bases we rely on.

We use a small number of providers, who process data on our instructions:

• our hosting provider, which runs the server the site is on;
• Google, which signs you in with your Google account (this happens on Google's own page, under Google's privacy policy);
• Supabase, which stores the database that holds the signals and the messages, newsletter addresses and sign-in records described above;
• Resend, if the newsletter is available, which sends our emails.
• Google, which runs Google Analytics, only if you accept analytics. Google may process this data in the United States and other countries.

Signals are detected by a program, not by an AI service: no language model writes them or decides how important they are.

When the daily reference refresh is switched on, we use an AI service (OpenAI) to help check and draft glossary and event updates from publicly available source text. No visitor data is sent to it.

The assistant (Nano) answers with a language model that runs on our own server. What you ask it is not sent to OpenAI or to any other outside AI company.

The signals, model and company pages are kept up to date by our server reading public data: the OpenRouter model list, the Arena leaderboard (LMArena, licensed CC BY 4.0, via Hugging Face), Hugging Face's trending models and daily papers, the public release feeds of AI software projects on GitHub, the United States Federal Register, and short descriptions from Wikipedia (CC BY-SA 4.0, credited on the page). These requests come from our server and carry nothing about visitors.

We do not use cookies for advertising. Your browser stores a few preferences on your own device, and two analytics cookies are set only if you accept them. See the Cookie policy.

Messages are kept as long as needed to deal with them, and deleted within 12 months. Newsletter addresses are kept until you unsubscribe. Server logs are kept for a limited time, as above. Visit statistics are kept in Google Analytics for at most 14 months, then deleted automatically.

You can ask what we hold about you, ask us to correct or delete it, object to our use of it, or withdraw consent, at any time. Use the contact form and say what you would like. If you are in the UK or EEA you may also complain to your local data protection authority.

Nanofuze is not aimed at children under 13 and we do not knowingly collect their data.

If we change this policy we will update the date at the top. Material changes will be announced on this page.