# UNITS MASTER vs Digitales Lüftungsaufmaß

The clearest difference is price: Digitales Lüftungsaufmaß at Free against UNITS MASTER's $6.99. Digitales Lüftungsaufmaß also leads on rating (5.0 vs 4.3) and update cadence (every 2 months vs every 4 months). UNITS MASTER's advantage is ratings volume (6 vs 1) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Digitales Lüftungsaufmaß is free to download; UNITS MASTER costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Digitales Lüftungsaufmaß holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: UNITS MASTER has 6 ratings behind it against 1, so its average is the more settled of the two.

UNITS MASTER ships an update every 4 months, Digitales Lüftungsaufmaß every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | UNITS MASTER | Digitales Lüftungsaufmaß |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [4.3 (6 ratings)](https://appshunter.io/ios/app/units-master/id1428926317/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/digitales-luftungsaufma/id1583576047/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 13 MB | 35 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intemodino Group s.r.o.](https://appshunter.io/developer/557849644) | [Markora Digital Solutions GmbH](https://appshunter.io/developer/1583576049) |

## What reviewers say

### UNITS MASTER

[App page](https://appshunter.io/ios/app/units-master/id1428926317)

This app is a comprehensive unit conversion calculator for length, distance, and area. It supports a vast array of US and metric units, offering both fractional and decimal calculations with customizable rounding. Users can also perform complex mathematical operations and access a calculation history.

**Highlights:** Extensive US and metric unit support, Fractional and decimal calculations, Customizable rounding precision, Complex calculation capabilities, Calculation history and sharing, Multiple output formats

**Features:** Vision Pro support

**In-app purchases:** none


### Digitales Lüftungsaufmaß

[App page](https://appshunter.io/ios/app/digitales-luftungsaufma/id1583576047)

Create detailed measurements for ventilation ducts and fittings with a 3D visualizer. Input data quickly, validate entries, and export to various formats. Designed for professionals in ventilation technology.

**Highlights:** Digital measurement of ducts and fittings, 3D live view of components, Input validation, Compliance with DIN 18379, PDF, Excel, and XML export, Integrated data shipping

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is UNITS MASTER free?

UNITS MASTER costs $6.99, with no in-app purchases.

### Is Digitales Lüftungsaufmaß free?

Digitales Lüftungsaufmaß is free to download, with no in-app purchases.

### Which has better reviews, UNITS MASTER or Digitales Lüftungsaufmaß?

Digitales Lüftungsaufmaß is rated higher. UNITS MASTER averages 4.3 out of 5 from 6 ratings, while Digitales Lüftungsaufmaß averages 5.0 from 1 ratings.

### Do UNITS MASTER or Digitales Lüftungsaufmaß have ads?

Neither UNITS MASTER nor Digitales Lüftungsaufmaß shows ads.

### Which is updated more often, UNITS MASTER or Digitales Lüftungsaufmaß?

UNITS MASTER ships an update every 4 months, and Digitales Lüftungsaufmaß every 2 months. Most recently, UNITS MASTER was updated on November 2, 2026 and Digitales Lüftungsaufmaß on November 3, 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.*