# Electrical Formulator vs Prysmian Group Voltage Drop

Electrical Formulator and Prysmian Group Voltage Drop both sit at 5.0 stars, but that hides the real split: 100% of Prysmian Group Voltage Drop's written reviews are positive against 16% of Electrical Formulator's. Prysmian Group Voltage Drop also leads on in-app purchases (none vs 1) and ratings volume (6 vs 1). Electrical Formulator's advantage is update cadence (every 2 months vs every 7 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Electrical Formulator sells 1 one-off in-app purchase. Prysmian Group Voltage Drop asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Electrical Formulator against 5.0 for Prysmian Group Voltage Drop. That said, the two scores are not equally well evidenced: Prysmian Group Voltage Drop has 6 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 16% of Electrical Formulator's written reviews are positive against 100% of Prysmian Group Voltage Drop's.

Electrical Formulator ships an update every 2 months, Prysmian Group Voltage Drop every 7 months. The most recent releases landed on September 3, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | Electrical Formulator | Prysmian Group Voltage Drop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/electrical-formulator/id299749412/reviews) | [5.0 (6 ratings)](https://appshunter.io/ios/app/prysmian-group-voltage-drop/id847894136/reviews) |
| Number of ratings | 1 | **6** |
| Positive reviews | 16.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Freemium | **Free** |
| Size | 16 MB | 8 MB |
| Requires iOS | 18.4 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Prysmian Group](https://appshunter.io/developer/914872756) |

## What reviewers say

### Electrical Formulator

[App page](https://appshunter.io/ios/app/electrical-formulator/id299749412)

This app provides a comprehensive suite of electrical calculation tools for design and engineering challenges. It offers hundreds of conversion and calculation options, with features to save, print, and email results. Easily access frequently used and recently accessed formulas, with all calculations automatically stored.

**Highlights:** Over 100 electrical formulas, Save and organize results, Share results via email or print, Access most-used and recent formulas, Supports US/Imperial and metric units, Formula categories for batteries, motors, transformers, and more

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Features For Electrcial | $1.99 | one-time |


### 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


## Frequently asked questions

### Is Electrical Formulator free?

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

### Is Prysmian Group Voltage Drop free?

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

### Which has better reviews, Electrical Formulator or Prysmian Group Voltage Drop?

Electrical Formulator and Prysmian Group Voltage Drop are both rated 5.0 out of 5 on the App Store, from 1 and 6 ratings respectively.

### Do Electrical Formulator or Prysmian Group Voltage Drop have ads?

Neither Electrical Formulator nor Prysmian Group Voltage Drop shows ads.

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

Electrical Formulator ships an update every 2 months, and Prysmian Group Voltage Drop every 7 months. Most recently, Electrical Formulator was updated on September 3, 2026 and Prysmian Group Voltage Drop on June 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.*