# Oventrop vs RadiatorOutput

The clearest difference is review sentiment: RadiatorOutput at 100% against Oventrop's 44%. Oventrop's advantage is update cadence (monthly vs every 8 months). On price, ads, in-app purchases and monetization model 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, RadiatorOutput every 8 months. The most recent releases landed on September 29, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Oventrop | RadiatorOutput |
| --- | --- | --- |
| 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 | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 8 months |
| Monetization | Free | Free |
| Size | 48 MB | 1 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Oventrop GmbH & Co. KG](https://appshunter.io/developer/396298549) | [Sebastjan Valic](https://appshunter.io/developer/503687385) |

## 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


### RadiatorOutput

[App page](https://appshunter.io/ios/app/radiatoroutput/id503687382)

Calculate radiator heat output based on water and air temperatures. Ensure optimal energy efficiency and cost savings by selecting the correct radiator size for any heating system, including those with low water temperatures. Supports metric units and can also calculate cooling output for convectors and fan-coils.

**Highlights:** Calculate radiator heat output, Adjust for water and air temperatures, Optimize energy efficiency, Supports low water temperature systems, Calculate cooling output, Metric units only

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Oventrop free?

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

### Is RadiatorOutput free?

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

### Do Oventrop or RadiatorOutput have ads?

Neither Oventrop nor RadiatorOutput shows ads.

### Which is updated more often, Oventrop or RadiatorOutput?

Oventrop ships an update monthly, and RadiatorOutput every 8 months. Most recently, Oventrop was updated on September 29, 2026 and RadiatorOutput on September 26, 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.*