Alen Air 4+

Alen Air - Indoor Air Quality

Alen Corporation

    • 2.7 • 117 Ratings
    • Free

iPhone Screenshots


The Alen Air app provides powerful air quality insights, control, and support in one place, wherever you are. “Know it’s working” when you’re not next to your purifier.

Take control of your environment and make the invisible, visible! The Alen Air app gives you the power to see, control, and analyze your air quality, all in one place, wherever you are. Have you ever wanted to "know it's working"? Now you can! Wirelessly control your entire environment, connect to multiple Alen purifiers or Alen Air Quality Monitors right from your phone!

Harness the power of Alen's advanced sensor technology, vivid color rings, and proactive notifications. This app includes features such as:

Easily add your Alen BreatheSmart 45i and BreatheSmart 75i purifiers, and Alen Air Quality Monitor (AQM) into the Alen Air app via Wifi or Bluetooth.

View your indoor and outdoor air quality, both current and historical with easy to read graphs. Download historical data for custom analysis!

Receive Notifications if your Air Quality reaches a level requiring your attention, like prolonged periods of poor air quality.

Keep you purifiers operating at optimum levels by receiving notifications when you filter is close to needing replacement, and ordering the correct filters by leveraging the app's ability to recongize your purifier model.

Remotely control a single purifier, or take the same actions across many purifiers at the same time.

Own a lot of Alen units at one or multiple locations? Quickly identify where to focus attention with the highest priority information via the dashboard, and organize/manage thousands of purifiers across multiple locations.

What’s New

Version 3.0.1

Bug Fixes.

Ratings and Reviews

2.7 out of 5
117 Ratings

117 Ratings

JG in SB ,

Just OK

I love my Alen filters and their customer service is top notch. The app is just OK though. Forces you to have to enter your login credentials frequently. No option to at least save them with Face ID or fingerprint. You have to type the entire credentials in when this happens. Why do we need fort-Knox security protocols to adjust settings on air filters?? Please fix this necessary and annoying issue.

The indoor humidity and temperature readings are blank. This is identical for all four of my filters which include two different models and are located in two different buildings. The screenshots on the App Store clearly depict a screen showing the indoor temperature and humidity. On all four of my units these values simply show as “- -“

It would be great if the app team could get on-par with the product team and customer service team.

Ss234-) ,

App goes to home page then shuts. Never opens

I am adding to my review.
Originally, about 3years ago I easily connected my devices. A bit over a year ago I left the below review. After maybe 40 brain numbing tries I finally got my 2nd 45i to connect to the app. Ridiculous. Recently both of our devices became disconnected. Once again the app WILL NOT PAIR. The air purifiers are great but this has to be the worst app on the planet. If you can not connect your devices what’s the point. Once again I’ve tried to reconnect each device over a dozen times. After a 10 minute process it fails EVERY TIME. I have plenty of other devices and apps that require the same parameters and they connect and work. Don’t bother with the app when you can’t connect. I am not the only customer who has this problem. It would be nice if Alen would fix the problem.
last upgrade 2.0.1 I can no longer get into my app. It opens to the Alen page and then closes. I have tried everything short of uninstalling and reinstalling the app. If I must reinstall the app I can not connect my 45i anymore because that pairing process will not work with my split 2.4/5 g Wi-Fi. So, I will lose connection to my purifier. Since Alen does not provide connection with this type of Wi-Fi the app will no longer serve a purpose. Really unfortunate. So, it would be nice if I could get the app to open without having to reinstall.

Developer Response ,

That doesn't seem right. Can you please reach out to our Customer Experience team at They will put you in contact with the Product Manager of the app and he'll be able to escalate this to the proper parties.

Additionally, if you uninstall and reinstall the app you will not have to go through the pairing process again since your data is stored in the cloud.

idleBytes ,

Ok app great air purifier

The app is fine I didn't even know it existed until after owning my purifiers for years. I like that I can adjust the settings on all of my 45is at once but it's necessarily convoluted. Basically I want to be able to swap between sleep mode and auto mode and have them locked.

To go from sleep to auto I have to unlock all the devices, select manual mode because auto doesn't show up as an option when in sleep mode, select auto mode and then re-lock all devices. That's twelve clicks to accomplish what should be two.

Confirming I want to change the settings every time is unnecessary, you should be able to change modes while leaving the unit locked and auto mode missing while in sleep mode is obviously a bug.

It would nice to have a routine you could just set for everything if it's not possible to let me switch modes for all devices while the units are locked.

App Privacy

The developer, Alen Corporation, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Contact Info

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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