Comparison

Oventrop vs Luftkanalrechner

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

Head to head
About

Oventrop

This app assists with the design, calculation, and documentation of hydronic balancing for heating systems. It supports various standards and regulations, enabling users to calculate valve presets, heating loads, and radiator sizes. Documentation can be generated in PDF format or printed wirelessly.

Highlights
  • Project design with calculations (VdZ, BEG)
  • Heating check according to EnSimiMaV and DIN SPEC 15378
  • OV-DMC 3 measuring system integration
  • Simplified heating load calculation (DIN 12831)
  • DIN radiator and thermostatic valve sizing
  • ErP energy efficiency label creation
  • PDF documentation and wireless printing
Features
Read full description

Functions: • Project design incl. calculations for procedure A or B (VdZ, BEG) • Heating check according to EnSimiMaV und DIN SPEC 15378:2018-08 • OV-DMC 3 measuring system for adjustment/control measurement in heating and cooling systems • With valve identification for the new double regulating valves HydroControl and HydroCom • Simplified heating load calculation according to DIN 12831 • DIN radiator sizing (existing or new) • Sizing of thermostatic valves • Sizing of double regulating valves • Creation of ErP energy efficiency label • Unit converter • Oventrop News • Oventrop Contact Oventrop GmbH & Co. KG offers an app to support the execution and documentation of the hydronic balancing of heating systems. Whether on the construction site, at a consultation appointment or in the office, users of the OVapp can calculate the preset values of the Oventrop thermostatic valves and regulating and pipeline valves at any time with their smartphone or tablet and thus easily carry out the hydronic balancing of heating systems. In addition, a simplified heating load calculation according to DIN EN 12831-B3 or a radiator sizing with DIN radiators is integrated. The OVapp can be used to fulfil the requirements of procedure A and B of the VdZ form (individual measure) for hydronic balancing within the framework of the Federal Funding for efficient buildings (BEG) for existing buildings - procedure B is possible when using the Q-Tech thermostatic valves with flow control. The calculations can be documented using a PDF file or WLAN printer. The VdZ form is filled out automatically according to the designs. Furthermore, the OV-DMC 3 measuring system for the adjustment and control of heating and cooling systems is integrated. Pressure measurements can be carried out easily with the OVapp and the measuring sensor, flow values can be determined and presettings for the desired volume flows can be determined. With the ErP wizard there is the possibility to create ErP energy efficiency labels as composite labels for Oventrop products in the field of solar thermal energy. Furthermore, an extensive manufacturer product database of the VdZ with ErP-relevant products can be accessed.

About

Luftkanalrechner

Features
Read full description

Der Luftkanalrechner ermöglicht die schnelle und einfache Auslegung eines Luftkanals oder eines Rohres zur Luftverteilung. Dabei kann der Luftkanalrechner sowohl die Kanalmaße berechnen als auch die zu erwartende Geschwindigkeit nach Abhängigkeit vom Volumenstrom und gewählten Querschnitt.

Screenshots

Oventrop4 screens
Luftkanalrechner4 screens

Verdict

The call

The clearest difference is update cadence: Oventrop at monthly against Luftkanalrechner's every 55 months. Oventrop also leads on iOS requirement (15.6 vs 17.0). On price, 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

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

UpkeepUpdate frequency

Oventrop ships an update monthly, Luftkanalrechner every 55 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
Oventrop versus Luftkanalrechner: the parameters behind the verdict, then further details
ParameterOventropLuftkanalrechner
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews44.4% of reviews—
Number of ratings1 — better—
Update frequencyMonthly — betterEvery 55 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size48 MB8 MB
Age rating4+4+
DeveloperOventrop GmbH & Co. KGMartin Wulf

In-app purchases

None

Oventrop

No in-app purchases

None

Luftkanalrechner

No in-app purchases

Questions

Is Oventrop free?
Oventrop is free to download, with no in-app purchases.
Is Luftkanalrechner free?
Luftkanalrechner is free to download, with no in-app purchases.
Do Oventrop or Luftkanalrechner have ads?
Neither Oventrop nor Luftkanalrechner shows ads.
Which is updated more often, Oventrop or Luftkanalrechner?
Oventrop ships an update monthly, and Luftkanalrechner every 55 months. Most recently, Oventrop was updated on November 1, 2026 and Luftkanalrechner on November 3, 2026.

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