# Southwire® Voltage Drop Calc vs ElectriCalc Pro

The clearest difference is in-app purchases: Southwire® Voltage Drop Calc at none against ElectriCalc Pro's 2. Southwire® Voltage Drop Calc also leads on update cadence (every 2 months vs every 10 months) and ratings volume (1.5K vs 364). ElectriCalc Pro's advantage is review sentiment (78% vs 48%) and rating (4.9 vs 4.6). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ElectriCalc Pro sells 2 in-app purchases, starting at $4.99 per month. Southwire® Voltage Drop Calc asks for nothing beyond the download.

ElectriCalc Pro holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 1.5K and 364 respectively. Written reviews point the same way: 48% of Southwire® Voltage Drop Calc's written reviews are positive against 78% of ElectriCalc Pro's.

Southwire® Voltage Drop Calc ships an update every 2 months, ElectriCalc Pro every 10 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Southwire® Voltage Drop Calc | ElectriCalc Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (1.5K ratings)](https://appshunter.io/ios/app/southwire-voltage-drop-calc/id440338420/reviews) | **[4.9 (364 ratings)](https://appshunter.io/ios/app/electricalc-pro/id569677304/reviews)** |
| Number of ratings | **1.5K** | 364 |
| Positive reviews | 48.1% of reviews | **78.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 10 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 10 MB | 29 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Southwire Company](https://appshunter.io/developer/440338423) | [Calculated Industries](https://appshunter.io/developer/370406449) |

## What reviewers say

### Southwire® Voltage Drop Calc

[App page](https://appshunter.io/ios/app/southwire-voltage-drop-calc/id440338420)

Calculate the appropriate wire size for electrical circuits. This tool helps determine wire size based on voltage drop and current carrying capacity, ensuring compliance with NEC ampacity limits.

**Highlights:** Determine wire size for voltage drop, Calculate voltage drop for conductor runs, Limit wire size by voltage drop, Limit wire size by NEC ampacity, Supports AWG and KCMIL sizes

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick and useful
- 🚀 Great Quick Reference
- 👍 A must have app for electricians
- 👍 Love These
- 👍 Electrical Engineer

**What reviewers complain about**

- 🐛 Motor starting Voltage drop
- 🐛 Useless!
- 🐛 Won't work
- 🐛 How to use
- 🐛 Confused

**Reported bugs**

- Useless!
- Won't work
- How to use
- Confused
- Bad app

**Requested features**

- Motor starting Voltage drop calculation
- Metric wire size options


### ElectriCalc Pro

[App page](https://appshunter.io/ios/app/electricalc-pro/id569677304)

This app provides electricians and electrical professionals with a powerful tool for performing complex calculations based on the latest National Electrical Code (NEC). It offers solutions for wire sizing, voltage drop, conduit sizing, and motor calculations, saving time and ensuring code compliance.

**Highlights:** NEC compliant calculations, Wire and conduit sizing, Voltage drop calculations, Motor full-load amps, Ohm's Law solver, Built-in help and tutorials

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $4.99 | per month |
| 1 Year Full Access | $39.99 | per year |


## Frequently asked questions

### Is Southwire® Voltage Drop Calc free?

Southwire® Voltage Drop Calc is free to download, with no in-app purchases.

### Is ElectriCalc Pro free?

ElectriCalc Pro is free to download, with in-app purchases available.

### Which has better reviews, Southwire® Voltage Drop Calc or ElectriCalc Pro?

ElectriCalc Pro is rated higher. Southwire® Voltage Drop Calc averages 4.6 out of 5 from 1.5K ratings, while ElectriCalc Pro averages 4.9 from 364 ratings.

### Do Southwire® Voltage Drop Calc or ElectriCalc Pro have ads?

Neither Southwire® Voltage Drop Calc nor ElectriCalc Pro shows ads.

### Which is updated more often, Southwire® Voltage Drop Calc or ElectriCalc Pro?

Southwire® Voltage Drop Calc ships an update every 2 months, and ElectriCalc Pro every 10 months. Most recently, Southwire® Voltage Drop Calc was updated on October 24, 2026 and ElectriCalc Pro on October 23, 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.*