uHoo Sense · $199/year · ~$17/month
The first step to being on top of your game.
Most people live with the symptoms and never find the cause. Headaches, restless nights, low energy. Sense shows you what is actually in the air you breathe every day so you can finally connect the dots.
Cancel the subscription anytime
Bedroom · Sense active
88 Good
CO₂742 ppm
PM2.58 µg/m³
Humidity34%
VOCsGood
Humidity low · open a window
What Sense does
You cannot improve what you cannot see.
Sense makes the invisible visible. Every parameter that shapes how you feel at home. CO₂, PM2.5, humidity, temperature, VOCs and more are monitored continuously and shown to you in plain language the moment something shifts.
Live air intelligence, around the clock
Sense tracks your home's air continuously across every room. Not a reading every hour but every 10 seconds. So when something changes you know immediately, not hours later when you are already feeling it.
Alerts that tell you what to do
When CO₂ climbs, when humidity drops, when particulates spike. Sense sends an alert to your phone with plain-language guidance. Not a raw number, with an actual recommendation, so you can act on it right now.
Patterns that explain your mornings
Waking up tired. Headaches by midday. Dry throat every winter. Sense tracks your air over time so you can see what is behind the symptoms you have been ignoring. The answers are often closer than you think.
Your whole household, one app
Monitor multiple rooms, share access with your partner or family, and keep tabs on the spaces that matter most. Your air quality dashboard lives on your phone, always with you.
What Sense measures
Nine parameters. One complete picture.
Every factor that shapes your comfort, your sleep, and how you feel when you wake up. Tracked continuously. Shown in real time.
Carbon Dioxide (CO₂)
The most common invisible cause of afternoon brain fog and poor sleep. Rises fast in closed rooms.
Safe below 800 ppm PM2.5 Fine Particles
Tiny particles from cooking, candles, traffic, and dust that travel deep into your airways undetected.
Safe below 12 µg/m³ VOCs
Volatile organic compounds off-gassing from furniture, paint, cleaning products, and building materials.
Tracked continuously Humidity
Too low and airways dry out. Too high and mold risk climbs. Sense keeps you in the comfort zone.
Ideal between 40% and 60% Temperature
Room temperature affects sleep quality, concentration, and how your body recovers overnight.
Ideal between 18°C and 22°C Air Pressure
Barometric pressure shifts correlate with headaches and joint discomfort in sensitive individuals.
Tracked continuously Nitrogen Dioxide (NO₂)
Emitted by gas stoves, heaters, and combustion. A known irritant that builds up in poorly ventilated kitchens.
Safe below 25 µg/m³ 
Carbon Monoxide (CO)
A colorless, odorless gas from faulty appliances and combustion that is dangerous at any level.
Alert at 35 ppm Ozone
Most people associate ozone with the sky. But it builds up indoors too, especially in rooms with printers, air purifiers that produce it, or poor ventilation.
Safe below 70 ppb Instant alerts
Know the moment something changes.
Sense watches your air constantly. The second a parameter moves outside a healthy range your phone gets a notification with plain-language guidance. No jargon. No guesswork. Just a clear action you can take right now.
CO₂ rising · Bedroom
Now at 1,240 ppm · Consider opening a window
Humidity low · Living room
34% · Dry air can irritate airways overnight
PM2.5 spike · Kitchen
28 µg/m³ · Turn on the extractor fan
Air quality restored · Bedroom
CO₂ back to 680 ppm · All clear
Your data, your rules
Private by design. Shared only if you choose.
Your air quality data belongs to you. It is encrypted, never sold, and never shared with anyone without your consent. Share access with your family inside the app. Everything else stays between you and uHoo.
Read our privacy policy →
Want more?
Sense is the beginning. Not the ceiling.
Sense gives you real-time awareness and instant alerts. When you are ready for deeper intelligence or full smart home automation there is a plan for that too.
Guard adds health indices.
Mold, Virus, Influenza, and Pollen risk scores. Room-by-room comparisons. Everything Sense gives you, taken further.
Plan comparison
Start with Sense. Upgrade whenever you are ready.
All plans include one uHoo Caeli device, free shipping, and a 30-day money-back guarantee. Billed annually.
Sense Membership
Start knowing.
$199/ year
$17 / month (billed annually)
What is included
✓uHoo Caeli Device included
✓Real-time reading across 9 different parameters
✓Get alerted instantly and know exactly what to do
✓Historical data and trends
✓Multiple devices in one account
✓Full mobile access
✓Household sharing
Upgrade to unlock –Mold, Virus, Flu and Pollen indices
–Room-by-room comparison
–Smart device automations
Guard Membership
Go deeper.
$249/ year
$20 / month (billed annually)
Everything in Sense plus
✓Mold, Virus, Influenza and Pollen indices
✓Room-by-room comparison
✓Seasonal health insights
Upgrade to unlock –Smart device automations
–Apple, Google, Alexa and SmartThings
–Personalized household profiles
Command Membership
Take full control.
$349/ year
$29 / month (billed annually)
Everything in Guard plus
✓Air-triggered smart device automations
✓Apple, Google, Alexa and SmartThings
✓Home Assistant integration
✓Personalized household profiles
All plans billed annually · Includes one uHoo Caeli device · Upgrade or downgrade anytime
Common questions
Answers before you decide.
Sense tracks 9 vital air quality parameters continuously: CO₂, PM2.5 fine particles, VOCs, temperature, humidity, atmospheric pressure, nitrogen dioxide, carbon monoxide, and ozone. All readings update every 10 seconds and appear in the uHoo app on your phone in real time.
Sense gives you live awareness: real-time readings, instant alerts, and data history. Guard adds four proprietary health indices that turn complex air data into clear health risk scores, so you always know what your air actually means for you. Command adds smart home automation so your devices respond to your air automatically. Sense is the foundation. You can upgrade to either plan at any time from your account dashboard.
Very straightforward. Plug the uHoo Caeli into any standard outlet, download the uHoo app, and connect to your home WiFi. Most households are seeing live data within 10 minutes. The device calibrates itself overnight so by the next morning you already have a reliable baseline for your home.
Yes. You can invite household members to view your air quality data directly from the app. Everyone in your home gets the same real-time visibility so the whole household stays in the loop.
Yes, anytime. If you upgrade to Guard or Command we charge the difference for the remainder of your billing year and your new features activate immediately. If you downgrade the difference becomes a credit applied to your next annual renewal. Your device and data stay with you either way.
Your data is yours. It is encrypted end-to-end, never sold, and never shared with any third party. You can export it or delete it permanently at any time from your account settings.
If Sense does not change how you see your home's air, you can cancel the subscription anytime.
uHoo Sense · $199/year · ~$17/month
Be on top of your game.
Knowing what is in your air is not a luxury. It is the simplest thing you can do to feel better at home. Start here.
Get Sense — start today Cancel the subscription anytime