# RadonEye vs lüft

The clearest difference is monetization model: lüft at free against RadonEye's paid. RadonEye's advantage is review sentiment (20% vs 0%) and ratings volume (52 vs 13). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 2.3 for RadonEye against 2.5 for lüft. Both are backed by a comparable volume of ratings — 52 and 13 respectively. Written reviews are what separate them: 20% of RadonEye's written reviews are positive against 0% of lüft's.

RadonEye ships an update every 3 months, lüft every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | RadonEye | lüft |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (52 ratings)](https://appshunter.io/ios/app/radoneye/id1491883383/reviews) | **[2.5 (13 ratings)](https://appshunter.io/ios/app/luft-sunradon/id1512257787/reviews)** |
| Number of ratings | **52** | 13 |
| Positive reviews | **19.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 29 MB | 41 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FTLab](https://appshunter.io/developer/897369751) | [SunRADON LLC](https://appshunter.io/developer/1512257786) |

## What reviewers say

### RadonEye

[App page](https://appshunter.io/ios/app/radoneye/id1491883383)

This smart device provides real-time radon detection for your home. It offers high sensitivity and accurate measurements, with data accessible and configurable via a smartphone app.

**Highlights:** Real-time radon detection, High sensitivity and accuracy, Dual ionization chamber system, Fast initial data output (<1 hour), Bluetooth smartphone connectivity, Data recording and graphing, Customizable alarm settings

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Device works well
- 👍 Accurate radon readings
- 👍 Simple UI
- 👍 Easy to use and pair
- 👍 Works quietly in background

**What reviewers complain about**

- 👎 App lacks date/time stamps
- 👎 Poor connectivity
- 👎 App disconnects frequently
- 👎 Device turns off when disconnected
- 👎 No cellular connection

**Reported bugs**

- App fails to connect to detector
- App asks user to reconnect instead of retrying
- Cannot connect to cellular
- No time stamps on historical data
- App and unit disconnect long distance

**Requested features**

- Add date and time stamps to data
- Enable renaming of devices
- Add Apple HomeKit integration
- Allow disabling of all sounds
- Improve UI/UX


### lüft

[App page](https://appshunter.io/ios/app/luft-sunradon/id1512257787)

Monitor your indoor air quality from anywhere with real-time sensor readings and visual alerts. Track trends, receive custom notifications, and analyze mold and outdoor air risks. Integrates with other devices and allows data sharing with professionals.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RadonEye free?

RadonEye is free to download, with no in-app purchases.

### Is lüft free?

lüft is free to download, with no in-app purchases.

### Which has better reviews, RadonEye or lüft?

lüft is rated higher. RadonEye averages 2.3 out of 5 from 52 ratings, while lüft averages 2.5 from 13 ratings.

### Do RadonEye or lüft have ads?

Neither RadonEye nor lüft shows ads.

### Which is updated more often, RadonEye or lüft?

RadonEye ships an update every 3 months, and lüft every 2 months. Most recently, RadonEye was updated on November 3, 2026 and lüft on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*