# Caleffi Pipe Sizer vs Golmar GCall

The clearest difference is review sentiment: Caleffi Pipe Sizer at 50% against Golmar GCall's 0%. Caleffi Pipe Sizer also leads on update cadence (every 7 months vs every 18 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.

Caleffi Pipe Sizer ships an update every 7 months, Golmar GCall every 18 months. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Caleffi Pipe Sizer | Golmar GCall |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 18 months |
| Monetization | Free | Free |
| Size | 44 MB | 95 MB |
| Requires iOS | 13.0 | **12.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Caleffi S.p.A](https://appshunter.io/developer/920722440) | [Golmar Sistemas de Comunicacion, SA](https://appshunter.io/developer/1333092728) |

## 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


### Golmar GCall

[App page](https://appshunter.io/ios/app/golmar-gcall/id1333092729)

Receive and answer calls from your home's entrance, seeing and speaking with visitors. It records missed calls with timestamps and supports up to four users per apartment. This app is compatible with specific Golmar devices.

**Highlights:** Receive visitor calls, See and speak to visitors, Open doors remotely, Record missed calls, Multi-user support

**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 Golmar GCall free?

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

### Do Caleffi Pipe Sizer or Golmar GCall have ads?

Neither Caleffi Pipe Sizer nor Golmar GCall shows ads.

### Which is updated more often, Caleffi Pipe Sizer or Golmar GCall?

Caleffi Pipe Sizer ships an update every 7 months, and Golmar GCall every 18 months. Most recently, Caleffi Pipe Sizer was updated on October 18, 2026 and Golmar GCall on October 16, 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.*