# Prysmian Group Voltage Drop vs ColombinApp

The clearest difference is update cadence: ColombinApp at every 5 weeks against Prysmian Group Voltage Drop's every 7 months. Prysmian Group Voltage Drop's advantage is iOS requirement (11.0 vs 15.1). 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.

Prysmian Group Voltage Drop ships an update every 7 months, ColombinApp every 5 weeks. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Prysmian Group Voltage Drop | ColombinApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/prysmian-group-voltage-drop/id847894136/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 8 MB | 53 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Prysmian Group](https://appshunter.io/developer/914872756) | [Netducational LLC](https://appshunter.io/developer/1406883043) |

## What reviewers say

### Prysmian Group Voltage Drop

[App page](https://appshunter.io/ios/app/prysmian-group-voltage-drop/id847894136)

Calculate maximum circuit distance and minimum conductor size for required voltage drop. Designed for electrical professionals, it provides detailed information on conductor size, voltage loss, and amperage based on NEC standards.

**Highlights:** Calculate Maximum Circuit Distance, Determine Minimum Conductor Size, View Actual Voltage Loss, NEC Code Selection (2011, 2014, 2017), Metric or Standard Conductors, Amperage Calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### ColombinApp

[App page](https://appshunter.io/ios/app/colombinapp/id1599368205)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prysmian Group Voltage Drop free?

Prysmian Group Voltage Drop is free to download, with no in-app purchases.

### Is ColombinApp free?

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

### Do Prysmian Group Voltage Drop or ColombinApp have ads?

Neither Prysmian Group Voltage Drop nor ColombinApp shows ads.

### Which is updated more often, Prysmian Group Voltage Drop or ColombinApp?

Prysmian Group Voltage Drop ships an update every 7 months, and ColombinApp every 5 weeks. Most recently, Prysmian Group Voltage Drop was updated on November 5, 2026 and ColombinApp on November 3, 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.*