# Electrical Formulator vs Voltage Drop Calculators

The clearest difference is price: Electrical Formulator at Free against Voltage Drop Calculators's $3.99. Electrical Formulator also leads on rating (5.0 vs 4.0) and update cadence (every 2 months vs every 7 months). Voltage Drop Calculators's advantage is in-app purchases (none vs 1) and ratings volume (4 vs 1). On ads and device support there is nothing between them.

Electrical Formulator is free to download; Voltage Drop Calculators costs $3.99 up front. Electrical Formulator sells 1 one-off in-app purchase. Voltage Drop Calculators asks for nothing beyond the download.

Electrical Formulator holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Electrical Formulator ships an update every 2 months, Voltage Drop Calculators every 7 months. The most recent releases landed on September 26, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Electrical Formulator | Voltage Drop Calculators |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/electrical-formulator/id299749412/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/voltage-drop-calculators/id6464050324/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 15.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | **Freemium** | Paid |
| Size | 16 MB | 67 MB |
| Requires iOS | 18.4 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Kantaben Gorasiya](https://appshunter.io/developer/1640260396) |

## 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 |


### Voltage Drop Calculators

[App page](https://appshunter.io/ios/app/voltage-drop-calculators/id6464050324)

This tool helps electrical professionals and students perform quick and accurate voltage drop calculations. It features a user-friendly interface, a material database, and the ability to save circuit details for efficient system design and compliance.

**Highlights:** Fast voltage drop calculations, Built-in material database, Custom material support, Save circuit details, Unit conversion, Recommended wire size guidance

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

**In-app purchases:** none


## Frequently asked questions

### Is Electrical Formulator free?

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

### Is Voltage Drop Calculators free?

Voltage Drop Calculators costs $3.99, with no in-app purchases.

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

Electrical Formulator is rated higher. Electrical Formulator averages 5.0 out of 5 from 1 ratings, while Voltage Drop Calculators averages 4.0 from 4 ratings.

### Do Electrical Formulator or Voltage Drop Calculators have ads?

Neither Electrical Formulator nor Voltage Drop Calculators shows ads.

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

Electrical Formulator ships an update every 2 months, and Voltage Drop Calculators every 7 months. Most recently, Electrical Formulator was updated on September 26, 2026 and Voltage Drop Calculators on September 28, 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.*