Comparison

lüft vs RAD

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

lüft

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
Read full description

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.

About

RAD

Connect to continuous radon monitoring devices to download and analyze radon data. Generate PDF reports directly from the app for easy sharing and record-keeping.

Highlights
  • Connect to femto-TECH CRM devices
  • Download radon monitoring data
  • Analyze collected data
  • Generate PDF reports
  • Data export functionality
Read full description

This application is intended for usage with femto-TECH continuous radon monitoring devices. It allows the user to download data directly from the CRM device for analysis and also serves as a PDF report generator.

Screenshots

lüft4 screens
RAD3 screens

Verdict

The call

The clearest difference is rating: RAD at 5.0 against lüft's 2.6. RAD also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (11.0 vs 13.0). lüft's advantage is ratings volume (8 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

RAD holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

UpkeepUpdate frequency

lüft ships an update every 2 months, RAD every 3 weeks. The most recent releases landed on July 5, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 6 level
lüft versus RAD: the parameters behind the verdict, then further details
ParameterlüftRAD
PriceFreeFree
Rating2.6 (8 ratings)5.0 (2 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings8 — better2
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.011.0 — better
Further details — not scored
Size46 MB109 MB
Age rating4+4+
DeveloperSunRADON LLCfemto-TECH, INC.

Customer experience

lüft

All ratings8 ratings
Positive25.0%
Neutral25.0%
Negative50.0%
Written reviews7 reviews
Positive0.0%
Neutral14.3%
Negative85.7%

RAD

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

lüft

No in-app purchases

None

RAD

No in-app purchases

Questions

Is lüft free?
lüft is free to download, with no in-app purchases.
Is RAD free?
RAD is free to download, with no in-app purchases.
Which has better reviews, lüft or RAD?
RAD is rated higher. lüft averages 2.6 out of 5 from 8 ratings, while RAD averages 5.0 from 2 ratings.
Do lüft or RAD have ads?
Neither lüft nor RAD shows ads.
Which is updated more often, lüft or RAD?
lüft ships an update every 2 months, and RAD every 3 weeks. Most recently, lüft was updated on July 5, 2026 and RAD on September 9, 2026.

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