# leaDCalc vs Electrical Motor Calculator

The clearest difference is price: leaDCalc at Free against Electrical Motor Calculator's $2.99. leaDCalc also leads on rating (5.0 vs 3.8) and update cadence (every 11 months vs every 43 months). Electrical Motor Calculator's advantage is chart position (#179 vs unranked) and ratings volume (8 vs 1). On ads, in-app purchases and device support there is nothing between them.

leaDCalc is free to download; Electrical Motor Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

leaDCalc holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Electrical Motor Calculator has 8 ratings behind it against 1, so its average is the more settled of the two.

leaDCalc ships an update every 11 months, Electrical Motor Calculator every 43 months. The most recent releases landed on June 21, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | leaDCalc | Electrical Motor Calculator |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/leadcalc/id1487509498/reviews)** | [3.8 (8 ratings)](https://appshunter.io/ios/app/electrical-motor-calculator/id1635906150/reviews) |
| Number of ratings | 1 | **8** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 months** | Every 43 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#179** |
| Size | 157 MB | 1 MB |
| Requires iOS | 16.0 | **13** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vaughn Warriner](https://appshunter.io/developer/1487509497) | [Heng Jia Liang](https://appshunter.io/developer/1532000635) |

## What reviewers say

### leaDCalc

[App page](https://appshunter.io/ios/app/leadcalc/id1487509498)

This app calculates direct current power lead sizes for telephone company central office power plants. It uses a circular slide rule format to determine allowable voltage drops and wire sizes based on specific system parameters.

**Highlights:** Circular slide rule format, Calculates allowable voltage drops, Determines DC power lead sizes, Supports 48V and 24V DC systems, References Bell System calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### Electrical Motor Calculator

[App page](https://appshunter.io/ios/app/electrical-motor-calculator/id1635906150)

**Currently charting:** #179 Top Paid · Productivity (US App Store)

This engineering tool calculates key electrical motor characteristics like amps, horsepower, and kVa. Input system voltage, motor efficiency, and power factor to determine electrical values for your system.

**Highlights:** Calculate amps, horsepower, and kVa, Input system voltage and motor efficiency, Converts kilowatts to horsepower, Defines Power Factor (PF) and Full Load Amps (FLA), Calculates Running Load Amps (RLA)

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

**In-app purchases:** none


## Frequently asked questions

### Is leaDCalc free?

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

### Is Electrical Motor Calculator free?

Electrical Motor Calculator costs $2.99, with no in-app purchases.

### Which has better reviews, leaDCalc or Electrical Motor Calculator?

leaDCalc is rated higher. leaDCalc averages 5.0 out of 5 from 1 ratings, while Electrical Motor Calculator averages 3.8 from 8 ratings.

### Do leaDCalc or Electrical Motor Calculator have ads?

Neither leaDCalc nor Electrical Motor Calculator shows ads.

### Which is updated more often, leaDCalc or Electrical Motor Calculator?

leaDCalc ships an update every 11 months, and Electrical Motor Calculator every 43 months. Most recently, leaDCalc was updated on June 21, 2026 and Electrical Motor Calculator on September 21, 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.*