# Voltage Drop Calculator. vs VFD Cable Sizing Calc

The clearest difference is in-app purchases: VFD Cable Sizing Calc at none against Voltage Drop Calculator.'s 1. VFD Cable Sizing Calc also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Voltage Drop Calculator. sells 1 one-off in-app purchase. VFD Cable Sizing Calc asks for nothing beyond the download.

Voltage Drop Calculator. ships an update every 3 months, VFD Cable Sizing Calc every 4 months. The most recent releases landed on September 18, 2026 and March 8, 2026 respectively.

## The numbers

| Metric | Voltage Drop Calculator. | VFD Cable Sizing Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (410 ratings)](https://appshunter.io/ios/app/voltage-drop-calculator/id1203737064/reviews)** | — |
| Number of ratings | **410** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 5 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Southwire Company](https://appshunter.io/developer/440338423) |

## What reviewers say

### Voltage Drop Calculator.

[App page](https://appshunter.io/ios/app/voltage-drop-calculator/id1203737064)

Calculate voltage drop and wire size using both NEC and IEC standards. Supports various load types, conductor materials, and system configurations. Generates detailed reports for electricians, engineers, and contractors.

**Highlights:** NEC and IEC dual standards, Voltage drop and wire sizing calculations, Support for continuous load and corrections, Copper or Aluminum conductor options, Single-phase and three-phase systems, Automatic compliance checks, PDF report generation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Go Pro | $4.99 | one-time |


### VFD Cable Sizing Calc

[App page](https://appshunter.io/ios/app/vfd-cable-sizing-calc/id6452802915)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Voltage Drop Calculator. free?

Voltage Drop Calculator. is free to download, with in-app purchases available.

### Is VFD Cable Sizing Calc free?

VFD Cable Sizing Calc is free to download, with no in-app purchases.

### Do Voltage Drop Calculator. or VFD Cable Sizing Calc have ads?

Voltage Drop Calculator. shows ads; VFD Cable Sizing Calc does not.

### Which is updated more often, Voltage Drop Calculator. or VFD Cable Sizing Calc?

Voltage Drop Calculator. ships an update every 3 months, and VFD Cable Sizing Calc every 4 months. Most recently, Voltage Drop Calculator. was updated on September 18, 2026 and VFD Cable Sizing Calc on March 8, 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.*