# Vibration analysis vs Thermal Transmittance Calc

The clearest difference is ads: Vibration analysis at none against Thermal Transmittance Calc's shown. Vibration analysis also leads on update cadence (every 3 months vs every 15 months) and ratings volume (43 vs 10). Thermal Transmittance Calc's advantage is review sentiment (67% vs 57%). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Vibration analysis sells 2 one-off in-app purchases and Thermal Transmittance Calc sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.0 for Vibration analysis against 4.1 for Thermal Transmittance Calc. Both are backed by a comparable volume of ratings — 43 and 10 respectively. Written reviews are what separate them: 57% of Vibration analysis's written reviews are positive against 67% of Thermal Transmittance Calc's.

Vibration analysis ships an update every 3 months, Thermal Transmittance Calc every 15 months. The most recent releases landed on September 21, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Vibration analysis | Thermal Transmittance Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (43 ratings)](https://appshunter.io/ios/app/vibration-analysis/id817385888/reviews) | **[4.1 (10 ratings)](https://appshunter.io/ios/app/thermal-transmittance-calc/id1473745621/reviews)** |
| Number of ratings | **43** | 10 |
| Positive reviews | 57.4% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 5 MB | 98 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) | [ALEXEY KOZLOV](https://appshunter.io/developer/1393860478) |

## What reviewers say

### Vibration analysis

[App page](https://appshunter.io/ios/app/vibration-analysis/id817385888)

This app analyzes phone accelerometer data to create a vibration spectrum. It helps evaluate vibration strength, frequency, and the rotation speed of various mechanisms like fans and motors. Useful for quality checks, malfunction detection, and balancing homemade rotating parts.

**Highlights:** Vibration spectrum analysis, Rotation speed evaluation, Mechanism quality assessment, Malfunction monitoring, Customizable FFT size, Multiple units of measurement, Peak frequency detection

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Settings | $2.99 | one-time |
| External accelerometer | $2.99 | one-time |


### Thermal Transmittance Calc

[App page](https://appshunter.io/ios/app/thermal-transmittance-calc/id1473745621)

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:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |
| Creating a new material | $2.99 | one-time |


## Frequently asked questions

### Is Vibration analysis free?

Vibration analysis is free to download, with in-app purchases available.

### Is Thermal Transmittance Calc free?

Thermal Transmittance Calc is free to download, with in-app purchases available.

### Which has better reviews, Vibration analysis or Thermal Transmittance Calc?

Thermal Transmittance Calc is rated higher. Vibration analysis averages 4.0 out of 5 from 43 ratings, while Thermal Transmittance Calc averages 4.1 from 10 ratings.

### Do Vibration analysis or Thermal Transmittance Calc have ads?

Thermal Transmittance Calc shows ads; Vibration analysis does not.

### Which is updated more often, Vibration analysis or Thermal Transmittance Calc?

Vibration analysis ships an update every 3 months, and Thermal Transmittance Calc every 15 months. Most recently, Vibration analysis was updated on September 21, 2026 and Thermal Transmittance Calc on September 10, 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.*