# Rohrdimensionierung vs HydroniCalc

The clearest difference is price: HydroniCalc at Free against Rohrdimensionierung's $3.99. HydroniCalc also leads on iOS requirement (17.0 vs 26.0). Rohrdimensionierung's advantage is in-app purchases (none vs 1). On ads and device support there is nothing between them.

HydroniCalc is free to download; Rohrdimensionierung costs $3.99 up front. HydroniCalc sells 1 one-off in-app purchase. Rohrdimensionierung asks for nothing beyond the download.

## The numbers

| Metric | Rohrdimensionierung | HydroniCalc |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Paid | — |
| Size | 2 MB | 7 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Burak Doelek](https://appshunter.io/developer/1602361104) | [Eric Chmara](https://appshunter.io/developer/1892404568) |

## What reviewers say

### Rohrdimensionierung

[App page](https://appshunter.io/ios/app/rohrdimensionierung/id1602361102)

Calculate pipe dimensions and heating capacity for heating systems. Supports steel pipes from DN 15 to 600 and stainless steel press pipes from 15mm to 108mm. Input temperature, density, specific heat, and flow rate.

**Highlights:** Pipe dimension calculation, Heating capacity calculation, Steel pipe support (DN 15-600), Stainless steel press pipe support (15-108mm), Temperature input, Density input, Specific heat input, Flow rate input

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

**In-app purchases:** none


### HydroniCalc

[App page](https://appshunter.io/ios/app/hydronicalc/id6796810526)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Calculators | $12.99 | one-time |


## Frequently asked questions

### Is Rohrdimensionierung free?

Rohrdimensionierung costs $3.99, with no in-app purchases.

### Is HydroniCalc free?

HydroniCalc is free to download, with in-app purchases available.

### Do Rohrdimensionierung or HydroniCalc have ads?

Neither Rohrdimensionierung nor HydroniCalc shows ads.

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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.*