Comparison

Digitales Lüftungsaufmaß vs Construction Acceptance

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

Head to head
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.

About

Construction Acceptance

Features
Read full description

Document the acceptance of construction or trade work in the German BGB / VOB/B context. The client and contractor complete one report together on an iPhone or iPad during a jobsite walkthrough. CAPTURE THE DETAILS • Add the project, trade or work, contract number, site address, acceptance date and time, client and contractor contact information, and general notes. • Select acceptance under the German Civil Code (§ 640 BGB) or formal acceptance under VOB/B (§ 12 VOB/B). This changes only the report’s label and stated basis. • Build a punch list of defects and unfinished work. Give each item a title, jobsite location, description and photos taken with the camera or selected from the photo library. • Record the parties’ declaration: not yet declared, acceptance declared, declared with reservation, or acceptance refused. • Record separate reservations for documented defects and contractual penalties (§ 341 BGB). Add a mutually agreed date for fixing the items, if one is set. • Have both parties draw their signatures with a finger on the device. Their printed names and signing times are recorded. FOLLOW A CLEAR PROCESS Work through project details, defects and outstanding work, reservations and agreed dates, signatures, and PDF preview and export. Completed steps receive checkmarks. Before unlocking, the app stores one report with up to five defect or unfinished-work items. Deleting the saved report opens the slot again. The on-screen PDF preview has a VORSCHAU watermark and excludes the photo appendix and drawn signature images; it indicates when signatures were captured. A one-time Protokoll-Export purchase unlocks unlimited reports and items and lets you export an A4 PDF through the iOS share sheet, print it, or save it to Files. The exported PDF has no watermark. It includes numbered items, reservations and the agreed date, a photo appendix organized by item, both drawn signatures with signing times, and page numbers. Its filename is generated from the project or street and date. No subscription. PRIVATE AND AVAILABLE OFFLINE Reports and resized photos are stored on the device. No account, server or cloud sync. The app works without internet; purchasing or restoring the unlock needs an App Store connection. The interface is in German and English. IMPORTANT LEGAL NOTE This app documents information entered by the parties. It does not give legal advice, decide whether acceptance has legal effect, recommend a declaration, or calculate warranty limitation periods or other legal deadlines. The BGB and VOB/B references identify only the basis selected for the report.

Screenshots

Digitales Lüftungsaufmaß4 screens
Construction Acceptance4 screens

Verdict

The call

The clearest difference is in-app purchases: Digitales Lüftungsaufmaß at none against Construction Acceptance's 1. Digitales Lüftungsaufmaß also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads 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

Both are free to download. Construction Acceptance sells 1 one-off in-app purchase. Digitales Lüftungsaufmaß asks for nothing beyond the download.

UpkeepUpdate frequency

Digitales Lüftungsaufmaß ships an update every 2 months, Construction Acceptance every 5 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
Digitales Lüftungsaufmaß versus Construction Acceptance: the parameters behind the verdict, then further details
ParameterDigitales LüftungsaufmaßConstruction Acceptance
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size35 MB1 MB
Age rating4+4+
DeveloperMarkora Digital Solutions GmbHCosmic Production d.o.o.

In-app purchases

None

Digitales Lüftungsaufmaß

No in-app purchases

1 purchases

Construction Acceptance

One-time1
  • Protocol Export$8.99

Questions

Is Digitales Lüftungsaufmaß free?
Digitales Lüftungsaufmaß is free to download, with no in-app purchases.
Is Construction Acceptance free?
Construction Acceptance is free to download, with in-app purchases available.
Do Digitales Lüftungsaufmaß or Construction Acceptance have ads?
Neither Digitales Lüftungsaufmaß nor Construction Acceptance shows ads.
Which is updated more often, Digitales Lüftungsaufmaß or Construction Acceptance?
Digitales Lüftungsaufmaß ships an update every 2 months, and Construction Acceptance every 5 weeks. Most recently, Digitales Lüftungsaufmaß was updated on November 3, 2026 and Construction Acceptance on October 31, 2026.

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