Comparison

Thermal Transmittance Calc vs SplitFlap

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

Head to head
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.

About

SplitFlap

This application simulates the function of a split-flap display board. It individually controls each of the 132 flaps to create a realistic scrolling effect. The app aims to eventually control a physical split-flap board.

Highlights
  • Simulates split-flap display function
  • Controls 132 individual flaps
  • Realistic scrolling effect
  • Uses separate threads for each flap
  • Future control of physical boards
Read full description

Ein Hersteller bietet nächstens ein Splitflap Board (Fallblatt-Anzeigesystem) an. Um die Funktion bereits zu simulieren wurde diese App entwickelt. Die App simuliert die reale Splitflap Funktion. Alle 132 Fallblätter werden einzeln angesteuert und geblättert bis das richtige Fallblatt ansteht. Für jedes zu wechselnde Fallblatt wird ein eigener Thread erzeugt. Dadurch wird eine realistische Anzeige erreicht. Ziel dieser App ist auch eine zukünftige Ansteuerung des realen Splitflat Board. ----------------------------------------------------------------------- A manufacturer will soon offer a split flap board. This app was developed to simulate the function. The app simulates the real split flap function. All 132 flap’s are individually controlled and scrolled until the correct flap is set. A separate thread is created for each flap to be changed. This ensures a realistic display. The aim of this app is also to control the real split flat board in the future.

Screenshots

Thermal Transmittance Calc4 screens
SplitFlap3 screens

Verdict

The call

The clearest difference is price: Thermal Transmittance Calc at Free against SplitFlap's $1.99. Thermal Transmittance Calc also leads on review sentiment (67% vs 22%) and rating (4.1 vs 1.9). SplitFlap's advantage is in-app purchases (none vs 2) and ads (none vs shown). On ratings volume, device support and iOS requirement 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

Thermal Transmittance Calc is free to download; SplitFlap costs $1.99 up front. Thermal Transmittance Calc sells 2 one-off in-app purchases. SplitFlap asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Thermal Transmittance Calc holds the better App Store score, 4.1 against 1.9. Both are backed by a comparable volume of ratings — 10 and 8 respectively. Written reviews point the same way: 67% of Thermal Transmittance Calc's written reviews are positive against 22% of SplitFlap's.

UpkeepUpdate frequency

Thermal Transmittance Calc ships an update every 15 months, SplitFlap weekly. Both last shipped on September 10, 2026.

Scorecard7 real differences · 3 level
Thermal Transmittance Calc versus SplitFlap: the parameters behind the verdict, then further details
ParameterThermal Transmittance CalcSplitFlap
PriceFree — better$1.99
Rating4.1 (10 ratings) — better1.9 (8 ratings)
Positive reviews66.7% of reviews — better22.2% of reviews
Number of ratings10 — better8
Update frequencyEvery 15 monthsWeekly — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size98 MB37 MB
Age rating4+4+
DeveloperALEXEY KOZLOVRico Obrist

Customer experience

Thermal Transmittance Calc

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews6 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

SplitFlap

All ratings8 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews9 reviews
Positive22.2%
Neutral22.2%
Negative55.6%

In-app purchases

2 purchases

Thermal Transmittance Calc

One-time2
  • Remove Ads$2.99
  • Creating a new material$2.99
None

SplitFlap

No in-app purchases

Questions

Is Thermal Transmittance Calc free?
Thermal Transmittance Calc is free to download, with in-app purchases available.
Is SplitFlap free?
SplitFlap costs $1.99, with no in-app purchases.
Which has better reviews, Thermal Transmittance Calc or SplitFlap?
Thermal Transmittance Calc is rated higher. Thermal Transmittance Calc averages 4.1 out of 5 from 10 ratings, while SplitFlap averages 1.9 from 8 ratings.
Do Thermal Transmittance Calc or SplitFlap have ads?
Thermal Transmittance Calc shows ads; SplitFlap does not.
Which is updated more often, Thermal Transmittance Calc or SplitFlap?
Thermal Transmittance Calc ships an update every 15 months, and SplitFlap weekly. Most recently, Thermal Transmittance Calc was updated on September 10, 2026 and SplitFlap on September 10, 2026.

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