Comparison

UNITS MASTER vs Digitales Lüftungsaufmaß

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

Head to head
About

UNITS MASTER

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
Read full description

Innovative unit conversion calculator. Get instant help with unit calculation and conversion! UNITS MASTER is a universal unit conversion calculator that allows you to instantly calculate and convert US and metric units of length, distance and area. SUPPORTED DISTANCE AND LENGTH UNITS: US/imperial units: mils, points, picas, inches, links, feet, yards, rods, chains, furlongs, miles, fathoms, nautical miles. Metric units: millimeters, centimeters, decimeters, meters, kilometers. SUPPORTED AREA UNITS: US/imperial units: square mils, square inches, square links, square feet, square yards, squares, square rods, square chains, acres, square miles, townships. Metric units: square millimeters(mm²), square centimeters(cm²), square decimeters(dm²), square meters(m²), ares, hectares, square kilometers(km²). LENGTH AND AREA UNIT CALCULATOR: - Calculates any combination of supported US and metric length and area units. - Performs calculation in fractions and decimals. - Complex calculations. - Easy fraction input. - Instantly converts results between different units. - Displays results in fractional and decimal forms. - Shows answer in any supported unit(s). LENGTH AND AREA UNIT CONVERTER: - 1000+ conversion combinations. - Converts units between US and metric systems. - Converts between units within the same system. - Converts between fractions and decimals. ROUND RESULTS TO SPECIFIED PRECISION: • Decimal results can be rounded to 0-9 decimal places. E.g. you may round results to the nearest 10ths, 100ths, etc. By default, the app is set up to round to 2 decimal places. If you need to round results to the nearest whole number, select 0 decimal places. • Rounding fractions to the nearest 1/2, 1/4, 1/8, 1/12, 1/16, 1/32, 1/64, 1/128, 1/256. If you do not need to round fractions, just select "-". It addition to extensive unit conversion and calculation options, UNITS MASTER offers standard features such as basic operations, calculation with parentheses, calculations with fractions and decimals, exponents, square root, trigonometric functions, etc. Other features: • Three virtual keyboards. • 'Default Output Unit' option - select default output unit or use smart Auto option • 'Output format' option: Fractions + Decimals, Auto, Fractions, Decimals. • Choose the way the app shows foot and inch symbols - you may use abbreviations ft and in or ′ for foot and ″ for inch. • Calculation history to view, recall, edit and share calculations. • Share calculation results by email. • 'Undo' for the Clear command. • Portrait and landscape mode. • Multiple themes to choose from. Learn more about UNITS MASTER at https://unitsmaster.com If you have any questions or need help with UNITS MASTER, please visit the online help and FAQ pages: https://unitsmaster.com/en/help/ https://unitsmaster.com/en/faq.html

About

Digitales Lüftungsaufmaß

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
Read full description

PLEASE NOTE: This app is currently only available in German. With the mobile app "Digitales Lüftungsaufmaß" for iPhone and iPad, you can create measurements for ducts and fittings in ventilation technology. With the help of the neat input masks, you are able to enter the measured duct parts within a few seconds and can then send them digitally. The app shows you each component as you enter it in a 3D model and at the same time checks various input criteria. This tool is aimed at executing and planning companies in the field of ventilation technology or ventilation system construction. It can be used to measure all angular duct networks around the ventilation system. The most important functions at a glance: - Access to projects with linked master data - Quick measurement function for spontaneous use - Dynamic 3D live view of the components for visual control - Input validation - Compliance with DIN 18379 - Ventilation ducts and surface calculation according to DIN 18379 - PDF, Excel and XML export - Integrated shipping of data to your own office or directly to the supplier - Central functions also possible without internet connection Note: To use the “Digitales Lüftungsaufmaß” mobile app, you must be User of the Markora backend system.

Screenshots

UNITS MASTER4 screens
Digitales Lüftungsaufmaß4 screens

Verdict

The call

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.

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

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
UNITS MASTER versus Digitales Lüftungsaufmaß: the parameters behind the verdict, then further details
ParameterUNITS MASTERDigitales Lüftungsaufmaß
Price$6.99Free — better
Rating4.3 (6 ratings)5.0 (1 ratings) — better
Positive reviews75.0% of reviews—
Number of ratings6 — better1
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size13 MB35 MB
Age rating4+4+
DeveloperIntemodino Group s.r.o.Markora Digital Solutions GmbH

Customer experience

UNITS MASTER

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Digitales Lüftungsaufmaß

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

UNITS MASTER

No in-app purchases

None

Digitales Lüftungsaufmaß

No in-app purchases

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.

Other comparisons