# Oventrop vs Luftkanalrechner

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.

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

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

## The numbers

| Metric | Oventrop | Luftkanalrechner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/oventrop/id396320655/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 55 months |
| Monetization | Free | — |
| Size | 48 MB | 8 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oventrop GmbH & Co. KG](https://appshunter.io/developer/396298549) | [Martin Wulf](https://appshunter.io/developer/1524684514) |

## What reviewers say

### Oventrop

[App page](https://appshunter.io/ios/app/oventrop/id396320655)

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:** macOS Compatibility

**In-app purchases:** none


### Luftkanalrechner

[App page](https://appshunter.io/ios/app/luftkanalrechner/id1524684512)

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*