# FläktGroup K Factor vs TROX Ox ServiceApp

The clearest difference is update cadence: TROX Ox ServiceApp at every 6 weeks against FläktGroup K Factor's every 6 months. FläktGroup K Factor's advantage is iOS requirement (12.4 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

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

FläktGroup K Factor ships an update every 6 months, TROX Ox ServiceApp every 6 weeks. The most recent releases landed on June 5, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | FläktGroup K Factor | TROX Ox ServiceApp |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 22 MB | 58 MB |
| Requires iOS | **12.4** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FlaktGroup Sweden AB](https://appshunter.io/developer/508731755) | [TROX GmbH](https://appshunter.io/developer/968659913) |

## What reviewers say

### FläktGroup K Factor

[App page](https://appshunter.io/ios/app/flaktgroup-k-factor/id508731752)

This utility app helps calculate airflow and pressure for various fan products. Access detailed documentation for ATD, Chilled Beam, and AHU fan systems from the developer.

**Highlights:** Air flow calculation, Pressure calculation, ATD fan product documentation, Chilled Beam fan product documentation, AHU fan product documentation, Intelligent Air-Technology solutions

**Features:** macOS Compatibility

**In-app purchases:** none


### TROX Ox ServiceApp

[App page](https://appshunter.io/ios/app/trox-ox-serviceapp/id6740277435)

**In-app purchases:** none


## Frequently asked questions

### Is FläktGroup K Factor free?

FläktGroup K Factor is free to download, with no in-app purchases.

### Is TROX Ox ServiceApp free?

TROX Ox ServiceApp is free to download, with no in-app purchases.

### Do FläktGroup K Factor or TROX Ox ServiceApp have ads?

Neither FläktGroup K Factor nor TROX Ox ServiceApp shows ads.

### Which is updated more often, FläktGroup K Factor or TROX Ox ServiceApp?

FläktGroup K Factor ships an update every 6 months, and TROX Ox ServiceApp every 6 weeks. Most recently, FläktGroup K Factor was updated on June 5, 2026 and TROX Ox ServiceApp on September 8, 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.*