Nox FAQ — product, safety, privacy & billing

About Nox

What is Nox?

Nox is an AI-powered health and wellness companion built by Aurena AI, a product of Xhealth, Inc. You talk to Nox in plain language — about symptoms, sleep, nutrition, medications, and everyday wellbeing — and Nox answers clearly, screens for warning signs, and helps you understand when something may need professional care.

Is Nox a medical device? Can it diagnose me?

No. Nox is not a medical device and does not diagnose, treat, or prescribe. Nox is a companion and educational tool that explains health topics in plain language and helps you decide when something may need professional care. It is not a replacement for professional medical advice, emergency services, or a clinician.

How is Nox different from other health AI or smart-ring apps?

Most smart-ring and health apps are built around data dashboards — charts you read and interpret yourself. Nox is built as a conversational companion: you ask questions in plain language and Nox explains what matters. Three things distinguish Nox: Leo, an independent, deterministic red-flag detection layer for acute conditions with publicly published accuracy metrics; app integrations that only create new items and always ask for confirmation before acting; and answers that cite trusted sources such as Mayo Clinic, CDC, NIH/MedlinePlus, and WHO. Nox is designed to pair with the Aurena smart ring (integration in development), and it remains an educational companion — not a medical device.

How does Leo, Nox's red-flag safety system, work?

Before the AI model answers, Leo — Nox's medical-safety system — screens your message for signs of acute red-flag conditions across dozens of categories, such as stroke signs, chest pain, severe breathing difficulty, or a mental-health crisis. Its first check is an independent, deterministic detection layer that runs before any AI is called, surfacing clear guidance to seek appropriate care, with the correct local emergency number when you set your region. Leo is a safety net, not a guarantee: no automated system catches every emergency, and Nox publishes the deterministic detector's measured recall and false-positive rates on its Trust & Transparency page.

Where does Nox get its health information?

Nox draws on a large library of health articles and medicine information and is instructed to cite trusted sources such as Mayo Clinic, CDC, NIH/MedlinePlus, and WHO. The size and freshness of the knowledge base are published on Nox's Trust & Transparency page.

Can Nox add to my calendar and other apps?

Yes. Through Nox's App you can ask Nox to add appointments to Google Calendar, save health notes to Google Docs, or set reminders in Todoist. Nox only creates new items and always asks you to confirm before acting — it never modifies your existing files.

Does Nox have a voice mode?

Yes. You can talk to Nox out loud and hear it respond in a natural voice, in real time. Nox Voice 1.2 supports many languages.

Does Nox work with the Aurena smart ring?

Nox is designed to connect with the Aurena smart ring to turn ring data into personalized insights. The ring is still in development; live ring-data integration is a planned feature, not yet available.

Is Nox free to use?

Yes — Nox has a Free plan with a usage allowance that refreshes monthly. Paid plans start at $5.99/month (Pro), with MAX at $24.99/month. Every plan includes a refreshing usage allowance, and you can get extra usage anytime.

Is my health data private?

Nox does not sell your data, and your chats are not used to train OpenAI's models. The Privacy Policy explains what is collected, how it is protected, and the controls you have over your personal and health data.

Medical safety

Does Nox catch every emergency?

No, and Nox never claims to. Leo's red-flag layer is a deterministic safety net that screens for a fixed list of acute warning-sign categories; emergencies outside those categories may not trigger a note. Its measured recall and false-positive rate are published openly on the Accuracy and Trust & Transparency pages. If you think you may be experiencing a medical emergency, call your local emergency number right away.

What happens if I describe something serious to Nox?

If your message matches a red-flag pattern — like chest pressure spreading to the arm, stroke signs, or severe breathing difficulty — Leo shows a clear emergency or urgent-care banner before any AI-generated content. The screening runs before the AI model is called, so this guidance does not depend on the AI behaving well.

Does Nox understand slang, other languages, or indirect ways of describing an emergency?

It tries to. When the deterministic layer finds nothing, a second check runs in the background: a lightweight AI classifier re-reads your recent messages to catch dangerous descriptions the fixed patterns can miss — slang, another language, older disease names, or indirect phrasing. If it recognizes a likely emergency, Nox surfaces the same seek-care guidance as a pattern match. This backstop can only add a safety note, never remove or soften one, and because it is not deterministic its results are kept separate from the published detector metrics. Because this backstop uses AI rather than fixed patterns, its results are kept separate from the published detector metrics on the Accuracy page — and, like the pattern layer, it is a safety net, not a guarantee.

Can I control how strict Nox's safety screening is?

You choose how far Leo's screening goes, free on every plan, from a control right in the chat box. Three levels sit side by side, left to right, from least to most protective: Relaxed warns you about clear emergencies only; Standard also warns on anything urgent; and Strict adds the AI backstop that re-reads recent messages for dangerous descriptions worded indirectly or in another language. Whatever you pick, Leo always screens for true emergencies — the level only changes how many optional layers run on top — and Agent and voice conversations always use the strictest setting.

How accurate is Nox's safety screening?

The detector's recall and false-positive rate are measured against a maintained, labeled test set and published — with per-category numbers, missed cases, and misfires — on the Accuracy page. The numbers are generated by the test suite and committed with the code, never hand-typed, and an automated test blocks any rule change that isn't re-measured.

Has a doctor reviewed Nox?

Not yet, and Nox says so plainly: clinician review status is 'pending'. Nox claims no clinician endorsement until a real, licensed clinician completes a review — at which point their name, credentials, scope, and review date will be published on the Trust & Transparency page.

Does Nox show the right emergency number for my country?

Yes, when you set your region. In Settings you can choose your region so Leo's safety banners show your local emergency number. If no region is set, Nox falls back to universal numbers (911 / 999 / 112) so emergency guidance is never blank.

Does Nox Voice 1.2 have the same safety rules?

Yes. Voice conversations go through the same Leo safety screening and the same conservative health guidance as text — talking to Nox out loud never relaxes the safety layer.

Privacy

Who can see my conversations with Nox?

You. There is no routine human review of conversations; access to production data is limited to operating the service, debugging a problem you report, or meeting a legal obligation. Nox does not sell your data, and your chats are not used to train OpenAI's models.

Can I talk to Nox without anything being saved?

Yes — Incognito mode. Incognito conversations are never written to storage at all. For everything else, you can delete any conversation, and review or delete every fact Nox's Memory holds, in Settings.

Is Nox covered by HIPAA?

No. Nox is a consumer wellness product, not a healthcare provider, so HIPAA does not apply to it. Nox's own privacy practices — no selling data, no training on your chats, sensitive-by-default handling of health data — apply regardless, and are described in the Privacy Policy and the plain-language privacy whitepaper.

How do I delete my data?

Delete individual conversations and remembered facts directly in the app. For full account deletion or a copy of your data, email privacy@aurenaring.com — the Privacy Policy describes these requests.

Plans, billing & cancellation

How much does Nox cost?

Nox has three plans: Free ($0), Pro at $5.99/month, and MAX at $24.99/month, plus a custom Enterprise tier for teams. Every plan includes a refreshing usage allowance, and you can get extra usage anytime with a one-time purchase.

How do usage limits work?

Every plan includes a usage allowance that refreshes automatically every month. Higher tiers include higher usage limits. If you run low, you can get extra usage anytime with a one-time purchase; purchased extra usage never expires and works with any model your plan has unlocked.

What is the difference between Pro and MAX?

Both include the Light 1.1 and Thinking 1.1 models and the Nox Agent 1.2 for deep research with live web sources. Pro includes standard monthly usage and focuses on health and lifestyle questions; MAX includes much higher usage limits, removes topic restrictions, and offers the highest depth of analysis.

What is the Enterprise tier?

The Enterprise tier is Nox for teams and organizations — custom usage allowances, shared workspaces and collaboration for your whole team, everything in MAX for every seat, and custom modes tailored to your organization. Pricing is custom — contact us to get set up.

Can I cancel or switch plans?

Yes. Paid subscriptions are billed through Stripe, and you can switch plans or cancel anytime from the billing portal in Settings. Downgrades take effect at the end of the current billing period.