Comparison

RadonEye+² vs Thermal Transmittance Calc

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

Head to head
About

RadonEye+²

This mobile application connects with the RadonEye+² radon detector to monitor radon levels. View logged data, download historical measurements, and visualize radon concentration over time with graphs.

Highlights
  • Connects with RadonEye+² detector
  • Monitor radon measurements
  • Download log data
  • View historical data graphs
  • Track radon concentration over time
Features
Read full description

RadonEye+²는 라돈 측정기인 RadonEye+²와 연동하는 모바일 어플리케이션입니다. 측정된 라돈 계측 정보를 모니터링 하고 로그 데이터를 다운로드하여 기간별 라돈 계측값을 그래프로 보여줍니다.

About

Thermal Transmittance Calc

Calculate heat loss and humidity issues in building structures. Input air temperature, humidity, and material layers to visualize temperature and dew point changes. Supports both Celsius/Fahrenheit and cm/inches.

Highlights
  • Calculate heat loss
  • Identify humidity problems
  • Visualize temperature and dew point changes
  • Supports Celsius and Fahrenheit
  • Supports centimeters and inches
  • Easy data entry and immediate results
Features
Read full description

This application allows you to help in checking the existing and planning future isolation. After entering data on the temperature and humidity of the air and selecting all layers of the enclosing structure (starting from inside the building and ending with the exterior trim of the facade or roof) in the Thermal Transmittance Calc, you will receive information on all likely heat losses, as well as possible problems with humidity. A schedule will be built, according to which you can track how the temperature and humidity will change and where the dew point in the layers of the structure will be. - Easy to use, enter all the data and immediately get the results. - Ability to enter the temperature in both Celsius and Fahrenheit. - Ability to enter the size of the layer in centimeters and inches.

Screenshots

RadonEye+²3 screens
Thermal Transmittance Calc4 screens

Verdict

The call

The clearest difference is review sentiment: Thermal Transmittance Calc at 75% against RadonEye+²'s 0%. Thermal Transmittance Calc also leads on rating (4.1 vs 1.0) and ratings volume (11 vs 3). RadonEye+²'s advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and device support 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. Thermal Transmittance Calc sells 2 one-off in-app purchases. RadonEye+² asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Thermal Transmittance Calc holds the better App Store score, 4.1 against 1.0. Both are backed by a comparable volume of ratings — 3 and 11 respectively. Written reviews point the same way: 0% of RadonEye+²'s written reviews are positive against 75% of Thermal Transmittance Calc's.

UpkeepUpdate frequency

RadonEye+² ships an update monthly, Thermal Transmittance Calc every 11 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard8 real differences · 2 level
RadonEye+² versus Thermal Transmittance Calc: the parameters behind the verdict, then further details
ParameterRadonEye+²Thermal Transmittance Calc
PriceFreeFree
Rating1.0 (3 ratings)4.1 (11 ratings) — better
Positive reviews0.0% of reviews75.0% of reviews — better
Number of ratings311 — better
Update frequencyMonthly — betterEvery 11 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.6
Further details — not scored
Size59 MB119 MB
Age rating4+4+
DeveloperFTLabALEXEY KOZLOV

Customer experience

RadonEye+²

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Thermal Transmittance Calc

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%
Written reviews12 reviews
Positive75.0%
Neutral16.7%
Negative8.3%

In-app purchases

None

RadonEye+²

No in-app purchases

2 purchases

Thermal Transmittance Calc

One-time2
  • Remove Ads$2.99
  • Creating a new material$2.99

Questions

Is RadonEye+² free?
RadonEye+² is free to download, with no in-app purchases.
Is Thermal Transmittance Calc free?
Thermal Transmittance Calc is free to download, with in-app purchases available.
Which has better reviews, RadonEye+² or Thermal Transmittance Calc?
Thermal Transmittance Calc is rated higher. RadonEye+² averages 1.0 out of 5 from 3 ratings, while Thermal Transmittance Calc averages 4.1 from 11 ratings.
Do RadonEye+² or Thermal Transmittance Calc have ads?
Thermal Transmittance Calc shows ads; RadonEye+² does not.
Which is updated more often, RadonEye+² or Thermal Transmittance Calc?
RadonEye+² ships an update monthly, and Thermal Transmittance Calc every 11 months. Most recently, RadonEye+² was updated on November 2, 2026 and Thermal Transmittance Calc on November 3, 2026.

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