iOS and Android

Your air quality,
always at your fingertips.

The uHoo app is where your Caeli data comes to life. Real-time readings, instant alerts, health indices, and smart home automation. All in one place, updated continuously from the sensor in your home.

Requires a uHoo Caeli device.
uHoo app air quality dashboard
9
Air parameters
1 min
Update interval
iOS + Android
Both platforms
Free
App download
What the app does

One app. Everything Caeli measures.

Download free and instantly see what’s in your air. uHoo’s app gives you real-time data, historical trends, and personalized alerts to help you breathe better.

Real-time air quality readings

Your air changes faster than you think. Caeli captures it every minute across nine parameters (CO₂, PM2.5, VOCs, humidity, temperature, air pressure, NO₂, CO, and ozone) so what you see in the app is always what is actually happening in your home right now.

9 parameters displayed live
Colour-coded status so you know at a glance what needs attention
Real-time air quality readings in the uHoo app
Instant alerts

When a parameter crosses a threshold, you hear about it straight away. Not in a daily summary. The moment it happens. CO₂ climbs, humidity drops, PM2.5 spikes, the app tells you what changed and what to do about it.

Push notifications the moment a threshold is crossed
Plain-language explanation of what the reading means
Actionable suggestion with every alert
Instant alerts in the uHoo app
Historical data and trends

Every reading your Caeli captures is stored in your account. Look back across days, weeks, and months to find patterns: the nights your CO₂ climbed, the mornings your humidity dropped, the weeks your air quality shifted.

Full air quality history stored in your account
Day, week, and month views for every parameter
Historical data and trends in the uHoo app
Command
Smart home automation

Command connects your air quality data to your smart home. Set rules so your home acts on bad air automatically. CO₂ climbs above 1,000 ppm and the ventilation switches on. Humidity drops below 40% and the humidifier kicks in. The air improves before you even notice a problem.

Integrates with Apple Home, Google Home, Amazon Alexa, and Samsung SmartThings
Home Assistant support
IF/THEN automation rules from any of Caeli's 9 air parameters
Smart home automation in the uHoo app
Guard
Room by room comparison

No two rooms in your home have the same air. The nursery runs warmer and more humid. The home office builds up CO₂. The kitchen spikes with VOCs when you cook. Guard shows you every room side by side so you always know which one needs attention.

All rooms visible in a single dashboard view
Compare any parameter across rooms at a glance
Health indices shown per room, not just per home
Room by room comparison in the uHoo app
Guard
Six health indices

Raw readings tell you what the air contains. The health indices tell you what it means. Four proprietary to uHoo: Mold, Virus, Influenza, and Pollen, plus Discomfort and AQI. Each one calculated daily from your live sensor data, expressed as a score from 1 to 10.

Mold Index: humidity and temperature conditions that allow mold to grow
Virus and Influenza indices: airborne transmission risk scored daily
Pollen Index: indoor allergen exposure based on your actual home
Discomfort Index and AQI: industry-standard comfort and air quality scores
Health indices in the uHoo app
Guard
Advanced analytics

Guard goes beyond live readings. Hourly trend charts show you today vs yesterday on every index. Weekly colour-coded comparisons show which days your air was good. Monthly calendar views surface patterns across the whole month. Date comparison lets you investigate any parameter across any two days.

Hourly trend charts: today vs yesterday on every index
Weekly and monthly comparison views
Date comparison across any parameter and any two dates
Time-of-day pattern summaries for all 9 parameters
Advanced analytics in the uHoo app
Guard
Household profiles

Tell Guard who lives in your home and it recalibrates every threshold and alert around them. One household, multiple health situations. Guard adjusts instantly when you switch profiles.

Has kids: tighter mold and humidity thresholds, earlier alerts
Has a pet: adjusted for dander and particulate levels
Has asthma: pollen, humidity, and particulate flagged at lower thresholds
Elderly household: CO, CO₂, and temperature recalibrated accordingly
Household profiles in the uHoo app
At a glance

Which features are always on. Which need Command or Guard.

The same app works across all configurations. Add Command or Guard to unlock more.

Caeli $249 · device only Command $59/yr · automation Guard $79/yr · health intelligence Stacked $99/yr · save $39
Capabilities Basic$0 + Command$59 / year + Guard$79 / year + Stacked$99 / year
Live air quality dataMinute by minute
Instant alerts
Air quality charts / history
Share data with family / friends
Smart Home IntegrationApple, Google, Alexa, SmartThings, Home Assistant--
Automation--
Room comparison--
Advanced analytics--
Overlay air charts to identify correlations--
Weekly and monthly views--
Time-of-day patterns--
Smarter alerts based on health profile--
Access to web dashboard--
Household profiles--
Discomfort Index--
Air Quality Index (AQI)--
Mold Index--
Virus Index--
Influenza Index--
Pollen Index--
Available on iOS and Android

Download the app.
See your air in real time.

Connect your Caeli device and your readings appear immediately.
No setup beyond pairing.

No device yet? Buy Caeli $249 -> Command and Guard both free for 3 months.