# Flow – Air Pollution Sensor — Connect Flow, Dodge the Smog! > Personal air pollution sensor companion app for data analysis and clean air navigation. (iPhone/iPad app by Plume Labs.) - Source: https://appshunter.io/ios/app/flow-air-pollution-sensor/id1332618814 (this page in markdown: same URL + `.md`) - Developer: [Plume Labs](https://appshunter.io/developer/950289242) - Category: Health & Fitness, Lifestyle - Price: Free - Rating: 2.50/5 from 27 App Store ratings · 63 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 69 MB - Languages: French (France), American English - Released: 2018-08-24 - Data updated: 2026-08-15 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/flow-air-pollution-sensor/id1332618814/reviews.md ## What is Flow? !! -- 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 ## Key features - Real-time pollution tracking (PM2.5, PM10, NO2, VOCs) - Personal exposure reports - Air Quality Index (AQI) monitoring - Clean air route finding - Pollution hotspot identification - Daily and live data analysis ## Recent user reviews (10 of 63) All indexed reviews: https://appshunter.io/ios/app/flow-air-pollution-sensor/id1332618814/reviews.md ### 1/5 — Really poor design *2022-11-24, version 1.5.4* The Flow item that you buy separately does not charge when placed in the dock and one has to hold it in vertical position for it to charge- in effect it’s always uncharged. Waste of money. ### 1/5 — App doesn’t open anymore *2022-07-07, version 1.5.4* App crashes immediately upon opening ### 1/5 — Inexistent user support. Energy hog *2022-05-31, version 1.5.4* User support is inexistent. No phone line available. You only have access to an IA-driven chat, which redirects to the FAQ (I’ve already read it, thank you). You can open a ticket on a web app, but never receive an answer. The mobile app is an energy hog. The application requires to have a 24/24 access to gps data and will not properly work otherwise (eg. access to gps data only when the app is open), which is nonsense for many user usages. ### 2/5 — Nice idea *2022-03-03, version 1.5.4* Nice idea but unfortunately these devices are not very accurate in my experience. I have two and they both have quite different readings at any point in time. I think the PM sensor is perhaps too small to be reliable and my research suggests NO2 is not really possible to monitor effectively with a small sensor (it only gives relative measures, ie going up or down). For anyone wanting better quality PM data I can recommend a Raspberry Pi with the enviro+ hat and PMS5003 sensor, though its NO2 sensor still has the same limitations as the Flow. ### 1/5 — Drains battery and increasingly inaccurate *2021-09-18, version 1.5.4* After using this for a few years I have decided to delete as apart from the app not having an update for some time, it drains the battery of your phone and gives dubious readings. I suggest trying an alternative product. ### 3/5 — Consuming a lot of battery in the background *2021-08-01, version 1.5.4* In the last 10 days, Flow was running in the background for 191 hours. It seems to be draining battery. ### 2/5 — Just stopped recording data *2021-05-03, version 1.5.4* It shows real-time data when I launch the app. But it stopped recording daily graphs April 20. I deleted the app and reinstalled it, and still nothing. I leave it running in the background all the time. But no history since then. ### 1/5 — Super capteur… *2021-04-30* … mais l’appli ne suit pas. Trop de bugs et surtout il manque les fonctionnalités pour exploiter les données. Ok on a de beaux graphiques, mais après? Pas de recherche possible, pas de filtre, pas moyen de générer de nouveau les graphiques quand la continuité de la donnée est rompue (alors qu’elle est présente dans les données brutes qu’on peut demander). Pas de paramétrage possible pour diminuer/augmenter les points de mesures, capteurs et position, pour soulager les batteries du téléphone et du capteur. Impossibilité d’éteindre le capteur, on a seulement accès à une mise en veille de 24 h max. Pourquoi? Attendre que la batterie se vide pour l’éteindre ? Les batteries lithium ne supportent pas le stockage en étant vides. Et à mon avis l’indice de réparabilité du Flow doit être très mauvais… Et malheureusement aucune réactivité de la part de l’équipe, aucune réponse aux mails qui remontaient des bugs, des idées… Et dommage que le Flow n’intègre pas de capteur de température, d’humidité, et de pression. Ça aurait été un vrai plus. Encore une bonne idée « made in France » mal exploitée 😩 ### 2/5 — Comportement aléatoire. *2021-04-27* 2 étoiles pour l’encouragement. Mais ça vaut 1 étoile. - Perte de donnés dans la journée en cours - Perte de jour entier - Application synchronisée mais bloquée sur des données d’il y a 7 jours. Synchronisation souvent hasardeuse. Sachant que le capteur dur pas plus d’une journée. Depuis le temps que lapp existe, et qu’elle n’a pas vraiment changée elle devrait au moins être stable. ### 5/5 — It’s brilliant device and App *2021-03-27, version 1.5.4* I absolutely love it ## Frequently asked questions about Flow ### What does the Flow app do? The Flow app collects and analyzes data from the personal Flow air pollution sensor. It provides easy-to-read reports, maps, and graphs about your exposure to pollutants like PM2.5, PM10, NO2, and VOCs, as well as the Air Quality Index (AQI). ### What kind of air pollution data does Flow track? Flow tracks real-time concentrations of PM2.5, PM10, NO2, and VOCs. It also provides the AQI air quality level, giving you comprehensive information about your exposure to various pollutants. ### How can this app help me avoid pollution? The app helps you find the best clean air commutes and avoid the most polluted places by tracking air pollution variations around you in real time. This information allows you to make informed decisions about your routes and activities. ### Do I need to buy a sensor to use this app? Yes, you must have the Flow personal air pollution sensor from Plume Labs to use this app. The app is a companion to the hardware sensor and relies on its data. ### Is this app compatible with my phone? The provided information does not specify compatibility details such as operating system versions. However, it is available on the App Store, suggesting compatibility with iOS devices. ## Version history (last 5 releases) ### 1.5.5 — 2025-04-11 * Support iOS 18 ### 1.5.4 — 2020-09-15 Escape pollution hotspots! Starting today, you can get live alerts when your Flow detects dangerous pollution levels. ### 1.5.3 — 2020-08-11 Escape pollution hotspots! Starting today, you can get live alerts when your Flow detects dangerous pollution levels. ### 1.5.2 — 2020-07-28 Escape pollution hotspots! Starting today, you can get live alerts when your Flow detects dangerous pollution levels. ### 1.5.1 — 2020-07-22 Escape pollution hotspots! Starting today, you can get live alerts when your Flow detects dangerous pollution levels. ## More apps by Plume Labs - [Plume Labs: Air Quality App](https://appshunter.io/ios/app/plume-labs-air-quality-app/id950289243) All apps by Plume Labs: https://appshunter.io/developer/950289242 ## Related topics [plume labs](https://appshunter.io/ios/topics/plume-labs) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*