uHoo is a smart indoor air quality monitor that detects toxins and allergens in the air, gives you personalized recommendations and alerts on how to maintain a healthy and clean environment, and relates how changes in air quality affects your health

- Features
View real-time data of 8 sensors (Temperature, Relative Humidity, Carbon Monoxide, Carbon Dioxide, PM2.5, TVOCs, Ozone, Air Pressure)
View historical data on 8 sensors with full data backup
Set your preferences to better control your allergies or improve your health
Provide real-time push-notification whenever air quality goes bad
Share uHoo devices with your friends and families

- Sensors
Temperature: -40°F to 185°F (-40°C to 85°C)
Relative Humidity: 0% to 100%
Carbon Dioxide: 400ppm to 10000ppm
Carbon Monoxide: 0ppm to 1000ppm
PM2.5: 0 to 200ug/m3
Total Volatile Organic Compounds (TVOC): 0ppb to 1200ppb
Ozone: 0ppb to 1000ppb
Air Pressure: 300hPa to 1100hPa

- Product Dimensions
Width: 85mm (3.3 inches)
Depth: 85mm (3.3 inches)
Height: 165mm (6.5 inches)
Weight: 265g

- Connectivity
Wi-Fi 802.11 b/g/n @ 2.4GHz with WPA/WP2-Personal security

- Power
100-240V power supply using the USB adapter and cable provided

- System Requirement
iPhone 5 or newer models running iOS 9 or above
uHoo account

- Customer Support

What’s New

Version 6.2

• Improved device setup process and app stability

Ratings and Reviews

3.0 out of 5
9 Ratings

9 Ratings

adworacz ,

Love the Uhoo, graphs could use some work

As other commenters have called out, using the data in the app is more difficult than it should be. Having to use an hour picker just to look at the previous hour is extremely slow.

Ideally, an implementation of horizontal scroll, similar to Plume’s would be excellent, making it much easier to look hour by hour or day by day.

On the positive side: I love the Insights, and smart notifications like ‘feeling stuffy?... CO2’ etc. Its caused us to become aware of how sealed our bedroom is at night, for example.

It’s also nice to see the impact of my air purifier on the PM2.5 and TVOCs.

Martinmusic ,

Incremental improvement, but

Thanks for continuing to develop this app. I like the horizontal scroll better. However, please add direct access from horizontal sensor bars to the sensor history. Example: touching the Temperature green/orange/red bar should open temperature history. Likewise for the others. Thanks. Still too many touches to get to sensor history imo.

Inf66 ,

Ok app

Not bad but unable to group delete all those notifications is a real issue for me.


uHoo Limited
87.7 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Czech, Danish, Dutch, French, German, Japanese, Russian, Simplified Chinese, Spanish, Traditional Chinese

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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