# Caleffi Pipe Sizer vs Rapid Rise

The clearest difference is update cadence: Rapid Rise at every 3 weeks against Caleffi Pipe Sizer's every 7 months. Caleffi Pipe Sizer's advantage is iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases and device support 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, Rapid Rise every 3 weeks. The most recent releases landed on October 2, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Caleffi Pipe Sizer | Rapid Rise |
| --- | --- | --- |
| 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 3 weeks** |
| Monetization | Free | — |
| Size | 44 MB | 335 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Caleffi S.p.A](https://appshunter.io/developer/920722440) | [Rapid Rise](https://appshunter.io/developer/1777131072) |

## 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


### Rapid Rise

[App page](https://appshunter.io/ios/app/rapid-rise/id6737570222)

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

**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 Rapid Rise free?

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

### Do Caleffi Pipe Sizer or Rapid Rise have ads?

Neither Caleffi Pipe Sizer nor Rapid Rise shows ads.

### Which is updated more often, Caleffi Pipe Sizer or Rapid Rise?

Caleffi Pipe Sizer ships an update every 7 months, and Rapid Rise every 3 weeks. Most recently, Caleffi Pipe Sizer was updated on October 2, 2026 and Rapid Rise on October 20, 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.*