# Caleffi Pipe Sizer vs Kammerer + Köhler

The clearest difference is update cadence: Kammerer + Köhler at every 2 months against Caleffi Pipe Sizer's every 7 months. Caleffi Pipe Sizer's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price, ads and in-app purchases there is nothing between them.

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

Caleffi Pipe Sizer ships an update every 7 months, Kammerer + Köhler every 2 months. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Caleffi Pipe Sizer | Kammerer + Köhler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/caleffi-pipe-sizer/id1088928458/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 44 MB | 68 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Caleffi S.p.A](https://appshunter.io/developer/920722440) | [WIADOK GmbH & Co. KG](https://appshunter.io/developer/1451176200) |

## What reviewers say

### Caleffi Pipe Sizer

[App page](https://appshunter.io/ios/app/caleffi-pipe-sizer/id1088928458)

This application assists hydraulic and HVAC professionals in accurately sizing water or air pipes. It calculates pressure drops and offers a modern, intuitive interface for precise system design on the go.

**Highlights:** Accurate water/air pipe sizing, Pressure drop calculation, Customizable technical parameter calculations, Extensive material and configuration library, Modern and intuitive interface, Enhanced performance

**Features:** macOS Compatibility

**In-app purchases:** none


### Kammerer + Köhler

[App page](https://appshunter.io/ios/app/kammerer-plus-kohler/id1573725099)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Caleffi Pipe Sizer free?

Caleffi Pipe Sizer is free to download, with no in-app purchases.

### Is Kammerer + Köhler free?

Kammerer + Köhler is free to download, with no in-app purchases.

### Do Caleffi Pipe Sizer or Kammerer + Köhler have ads?

Neither Caleffi Pipe Sizer nor Kammerer + Köhler shows ads.

### Which is updated more often, Caleffi Pipe Sizer or Kammerer + Köhler?

Caleffi Pipe Sizer ships an update every 7 months, and Kammerer + Köhler every 2 months. Most recently, Caleffi Pipe Sizer was updated on October 2, 2026 and Kammerer + Köhler on October 7, 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.*