iPhone Screenshots


!! -- You must have Flow, the personal air pollution sensor from Plume Labs, to use this app. For more information, please visit flow.plumelabs.com. -- !!

!! -- Looking for our free air quality forecasting app? Search for ‘Plume Air Report’ on the App Store or visit air.plumelabs.com. -- !!

*Escape pollution and dodge the smog!*
The Flow companion app from Plume Labs collects and analyses the data taken from your Flow’s PM2.5, PM10, NO2 and VOC sensors and gives you beautiful, easy-to-read reports, maps, and graphs.

*Ever feel trapped by air pollution?*
Air quality, AQI index, smog levels: with Flow, you can find the best clean air commute, hunt down fresh air playgrounds, eliminate chemical hotspots in your home, and that’s just the beginning.

*Did you know?*
Wind and weather, humidity and heat, atmospheric pressure, and many other factors create clean air pockets in urban environments. In fact, air pollution levels change up to 8X from street to street in the city, and even more from room to room indoors! Flow gives you the information you need to stay healthy at home or on the go.

*Stop guessing and start sensing!*
A new study from top researchers at King’s College in London shows that, with good data, you can reduce your exposure to air pollution by as much as 50% by making small changes to your routine.

***Key Features***
Track your personal pollution exposure with live data and daily reports: Flow measures real-time concentrations of PM2.5, PM10, NO2 and VOCs, as well as the AQI air quality level to give you everything you need to understand your exposure and build healthy routines.

Avoid the most polluted places: Flow tracks air pollution variations around you in real time, so you can find clean air.

Flow fits seamlessly into your daily life: Whether you're cycling, running, out in the park with the kids, or relaxing at home.
***Flow in the press***
“I hope many people living in polluted cities will end up using Flow.” —Techcrunch

What’s New

Version 1.4.2

Get instant insight into you personal air pollution exposure with Flow and Flow 2, companions to explain what’s in you air, anywhere!

This update adds Flow 2 compatibility including: Idle My Flow smart battery management, PM1 nano-particle sensing, and in app data exports! The team has also added tons more maps and lots of behind-the-scenes improvements.

Ratings and Reviews

3.1 out of 5
17 Ratings

17 Ratings

Reegor ,

Relative accuracy good but absolute is poor

This is a review of the underlyimg meter, not the software. It is small and cute. But it gives PM2.5 that is way too low. Readings of 3 indoors? When outside is never below 15, according to web sites. This is San Diego, no fountain of pure air.

The AQI is just as low.

On other hand, it responds fast eg to cooking. So it can give useful warnings.

No other device measures so many pollutants until you get to $500 more. So I hope/expect it to improve.

MattFling ,

The constant use of GPS & BT is not good.

I’ve been using the Flow for a couple days now and with it using my gps, Bluetooth and running in the background on my phone I’ve lost 35% of my battery life on my iPhone X using this app. They really should have put a gps in the device itself and a low power Bluetooth connection to maintain connection until you need to preform a full sync. I love he idea of knowing what the air quality is around me but not at the cost of charging my phone way more frequently. I would also like to add that the app needs a day,week,month and year view for your data. Hard to make choices about the air your in if you can’t view a historical visual layout of how things get worse or better though out the year. Maybe my walk to my coffee shop is better on the weekends than the weekdays... I will be returning this air quality monitor due to these issues.

Rain976 ,

Reading are off

My VOC reading say 500+ which I’m pretty sure if WAY off. I emailed support a week ago, but haven’t heard anything back to help. I live in Texas, but have taken it to Colorado and Washington, the VOC reading have never changed. All the other reading seem to be ok. I was hoping to at least be contacted, even if it’s not fixed by support before this. I’m getting ready to go on and international trip and would like to know that my flow is functioning correctly before leaving. I love the idea of this, and the people I’ve shown my flow to are excited and think it’s a very cool idea too.


Plume Labs SAS
95.3 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French

Age Rating
This app may use your location even when it isn't open, which can decrease battery life.


  • Family Sharing

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

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