# lüft - SunRADON — Mobile App for lüft Monitors

> Mobile app for monitoring indoor air quality with sensor data and alerts. (iPhone/iPad app by SunRADON LLC.)

- Source: https://appshunter.io/ios/app/luft-sunradon/id1512257787 (this page in markdown: same URL + `.md`)
- Developer: [SunRADON LLC](https://appshunter.io/developer/1512257786)
- Category: Utilities, Health & Fitness
- Price: Free
- Rating: 2.63/5 from 8 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 46 MB
- Languages: English
- Released: 2020-07-03
- Data updated: 2026-07-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/luft-sunradon/id1512257787/reviews.md

## What is lüft?

Mobile app for lüft made by SunRADON, the company trusted every day by Radon and Indoor-Air-Quality professionals worldwide to monitor homes, schools, workplaces, and health care facilities. 
Because clean air matters, the lüft mobile app provides you easy access to monitor your Indoor-Air-Quality from anywhere and anytime. A dashboard view gives you access to (6) IAQ sensor readings at once.  Traffic light color coding of the sensor readings quickly visualizes elevated or even dangerous readings. The app also provides Indoor Mold Risk and Outdoor Air Quality Risk Indicators for a complete analysis of the air surrounding you. 
Because Air-Quality and Radon levels fluctuate based on your home’s ventilation, airflow, and weather conditions the built-in trend charts let you drill down and review short- and long-term fluctuations from a single day to a year.  Setup up custom alerts and notifications when thresholds are reached to take actions to improve the air you breathe. 

The lüft Mobile app advanced features also allows you to program the integrated Nightlight function to suit the comfort of your home, synchronize temperature with other lüft™ or HVAC, securely share data with Indoor-Air-Quality professional of your choice, and setup to receive daily, weekly, or monthly air-quality summary reports. It further allows to download trend data for even more in-depth analysis when needed.  

Setup as easy as 1-2-3: download app, plug in device, and follow the on-screen instructions.

## Key features

- Real-time IAQ sensor readings
- Traffic light color-coded alerts
- Indoor Mold Risk Indicator
- Outdoor Air Quality Risk Indicator
- Trend charts for short/long-term fluctuations
- Custom alerts and notifications
- Nightlight function programming

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/luft-sunradon/id1512257787/reviews.md

### 1/5 — Stopped working

*2026-06-07, version 1.17*

App just locks up now when I open it. No chance to reset or reconnect or anything.

### 1/5 — App crushes continuously

*2026-05-10, version 1.17*

Great device, the App is a complete disaster. Can’t sign up from iPhone. I created a profile with another device.. it randomly disconnects. Now completely stopped working for an undisclosed “error”

### 3/5 — Works but could use improvement.

*2025-07-25, version 1.17*

It complains and fails to work if you don’t allow it to use location services and it requires a restart after you do give access in order for it to connect. It also requires you create an account. It does not allow upgrading the firmware using a Bluetooth connection, only works via 2.4 ghz WiFi. It requires hitting a not so obvious sync icon in order to get the current meter readings. It sets a lot of device settings on first run after creating an account but I could find any way to change these later. The temperature reading is sometimes inaccurate and seems to be off due to the Lüft device heat. It’s hard to find and difficult to set the threshold settings because they’re unusual, not simple, and non-intuitive. I had to enter my WiFi settings multiple times because it doesn’t give any error message when it doesn’t work, it just doesn’t work. The “trick” to get WiFi to work is to restart the app after giving all required location and Bluetooth permissions before entering the WiFi settings. I felt it unnecessarily intrusive on my privacy.

### 1/5 — Can’t get past set up

*2025-06-19, version 1.17*

I downloaded the app and it won’t let me set up a new account even though I’m meeting all the password requirements. I keep getting error messages. Worthless!

### 1/5 — Connection issues

*2024-12-29, version 1.15*

I have two Radon devices in our house. One upstairs and one downstairs. After initial set up, one device will work. After you connect the second one neither device works. Really frustrating and not worth the money if you can’t receive accurate feedback.

### 1/5 — App not working?

*2023-01-28, version 1.14*

When you start the app there are some readings, but I doubt they are anywhere reliable (1pCi/l sound too good to be true). When you refresh, all readings are gone. Expensive device, dissapointing experience.

### 1/5 — Cannot complete set up

*2022-07-14, version 1.13*

This app is asking for location services to be on to complete setup. Location services ARE on, so it’s essentially stuck in a state where it’s not proceeding past this step.

Complete failure of an app for something I paid a decent amount of money for. I’m livid.

## Frequently asked questions about lüft

### What is lüft used for?

lüft is a mobile app designed to monitor your indoor air quality. It provides real-time sensor readings, visual alerts for elevated levels, and analysis of mold and outdoor air risks.

### How does lüft help improve air quality?

lüft allows you to set up custom alerts for when air quality thresholds are reached, prompting you to take action. Trend charts help identify fluctuations based on ventilation and weather, enabling informed decisions.

### Can I share my air quality data with others using lüft?

Yes, the lüft app allows you to securely share your indoor air quality data with indoor-air-quality professionals of your choice.

### What kind of sensor readings does lüft provide?

lüft provides access to six IAQ sensor readings at once, visualized with a traffic light color-coding system to quickly indicate elevated or dangerous levels.

### Does lüft offer historical air quality data?

Yes, lüft includes built-in trend charts that let you review short- and long-term fluctuations from a single day up to a year. You can also download trend data for in-depth analysis.

### What devices is lüft compatible with?

lüft is available for iPhone and iPod devices. The app is rated for ages 4 and up.

### How often is lüft updated?

The latest version of lüft is 1.17, and it was last updated on May 23, 2025. Updates typically address bug fixes and feature enhancements.

### What is the user rating for lüft?

lüft has a user rating of 2.6 stars based on 8 ratings. This indicates a mixed reception from users.

## Version history (last 5 releases)

### 1.17 — 2025-05-23

Bug fix when reconnecting WiFi

### 1.16 — 2025-02-18

Updated Device Menu UI
Updated FAQ Links
Improved Firmware updates
Improved multiple phone synchronization

### 1.15 — 2024-07-30

- Ability to disable individual sensor alerts and warnings
- Optional manual data synchronization mode for users of 10 or more devices
- Improved setup guide for new users and when adding devices

### 1.14 — 2022-12-29

-	Added “Get More Help!” screens to aid setup and configuration
-	Added Information pop-up screens when pressing sensor values in dashboard
-	Improved Error handling and messages
-	Improved UI to standardize appearance of buttons
-	Bug fix regarding unnecessary time sync requests
-	Bug fix app color theme handling

### 1.13 — 2022-05-04

New: iPhone 13 compatibility
New: Added Outdoor Air Quality Index
New: Added Mold Risk Indicator
New: Ability to download Trend Chart data
New: Frequency of alerts/notification e-mails are now configurable
New: Allow to "Contact Support" via Helpdesk ticket
Improvement: General UI standards including selection boxes
Improvement: Immediate Data visibility when new device is added

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## More apps by SunRADON LLC

- [OneRADON](https://appshunter.io/ios/app/oneradon/id1395484721)
- [OneRADON XP](https://appshunter.io/ios/app/oneradon-xp/id6449913979)

All apps by SunRADON LLC: https://appshunter.io/developer/1512257786

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*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 2026-07-05.*