Understand your health, one clear answer at a time.
Nox helps you understand your health — your sleep, symptoms, medications and health data — with clear answers checked by a built-in medical-safety layer.
Start free — Includes 7 days of Pro, free. Card required. After 7 days Pro is $5.99/month unless you cancel — one tap in Settings → Billing.
Try it first: No account needed. Nothing is saved.
What people use Nox for
- Sleep better informed — Understand why you wake at 3am, and what to try tonight.
- Understand a health question — A symptom, a lab number or a medication — explained in plain words.
- Prepare for a doctor's visit — Walk in with a timeline and the right questions.
Real questions, real answers
I keep waking up at 3am and can't fall back asleep. What could be going on?
This sounds like trouble staying asleep — often called sleep maintenance insomnia. It's common and usually tied to a few specific factors. - Stress or anxiety — early-morning cortisol spikes can pull you awake. - Blood sugar dip — going to bed hungry can trigger a wake-up. - Sleep apnea — brief pauses in breathing can wake you at a fixed time. Try: keep a consistent wake time, and if you can't fall back asleep after 20 minutes, get up and do something quiet until you're sleepy. Care level: Book a routine appointment if this continues for 2–3 weeks.
Can I take ibuprofen with my lisinopril?
Likely: taking them together can reduce lisinopril's blood-pressure-lowering effect and, in some people, strain the kidneys. - If your kidneys are healthy and blood pressure is well controlled, occasional ibuprofen is often fine — lowest dose, shortest time. - Do not start, stop, or change either medication based only on this. - Ask a pharmacist or clinician before combining them regularly. Care level: Book a routine appointment — sooner if you notice swelling or less urine.
I have a doctor's appointment about my headaches next week. What should I bring up?
Here's how to make the most of the visit: - A symptom timeline — when it started, how often, how long, what helps. - Medications & supplements — everything you've tried, dose and how often. - Your top 3–5 questions — e.g. "Could these be migraine?" - Anything urgent — a sudden "worst ever" headache, fever with stiff neck, vision changes or weakness. Tip: fit the timeline on one page — it saves time and nothing gets missed.
Sleep, stress, blood pressure, symptoms, medications, wearable data — ask Nox anything, right now.
Free · No credit card
Type what's on your mind in your own words — Nox answers your actual question right away, a real, live answer streamed from the model, not a canned response. No account needed.
- Sleep
- Stress
- Blood pressure
- Symptoms
- Medications
- Wearable data
Ask in your own words — Nox answers right here, right now.
Don't lose this conversation
Save it with a free account — Nox remembers the context and follows up, so you never explain it twice.
No credit card required.
Quick answers
Do I need a credit card?
No. Guest chat and the free plan never ask for a card. A card is only needed if you choose to start the Pro trial or subscribe.
Is Nox a doctor?
No. Nox is an AI health advisor — it explains, informs, and helps you prepare for care, but it never diagnoses or prescribes, and it always points you to professionals when that's the right move.
What happens to what I type?
Guest conversations are never saved. With an account, your chats are private, are not sold, and you can delete conversations — or use Incognito mode for chats that are never stored.