# Oventrop vs HyTools

The clearest difference is rating: Oventrop at 5.0 against HyTools's 4.0. HyTools's advantage is ratings volume (5 vs 1). On price, review sentiment, update cadence and ads there is nothing between them.

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

Oventrop holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: HyTools has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 44% of Oventrop's written reviews are positive against 50% of HyTools's, so the app with the better star average is not the one people write more warmly about.

Oventrop ships an update monthly, HyTools every 6 weeks. The most recent releases landed on September 10, 2026 and July 25, 2026 respectively.

## The numbers

| Metric | Oventrop | HyTools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/oventrop/id396320655/reviews)** | [4.0 (5 ratings)](https://appshunter.io/ios/app/hytools/id537674477/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | 44.4% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 48 MB | 114 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Oventrop GmbH & Co. KG](https://appshunter.io/developer/396298549) | [IMI Hydronic Engineering International SA](https://appshunter.io/developer/508015425) |

## 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


### HyTools

[App page](https://appshunter.io/ios/app/hytools/id537674477)

This app provides HVAC professionals with a comprehensive suite of hydronic calculation tools. It assists with tasks like valve sizing, pressure drop calculations, and radiator power estimation. The tool offers unit conversion and language selection for user convenience.

**Highlights:** Hydronic calculator, Valve sizing and presetting, Radiator power estimation, Pipe sizing, Unit conversion, Pressure maintenance calculation

**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 HyTools free?

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

### Which has better reviews, Oventrop or HyTools?

Oventrop is rated higher. Oventrop averages 5.0 out of 5 from 1 ratings, while HyTools averages 4.0 from 5 ratings.

### Do Oventrop or HyTools have ads?

Neither Oventrop nor HyTools shows ads.

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

Oventrop ships an update monthly, and HyTools every 6 weeks. Most recently, Oventrop was updated on September 10, 2026 and HyTools on July 25, 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.*