# Voltage Drop Calculator. vs Power Conversion Calc

The clearest difference is in-app purchases: Power Conversion Calc at none against Voltage Drop Calculator.'s 1. Power Conversion 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. Power Conversion Calc asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Voltage Drop Calculator. | Power Conversion 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 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 6 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| 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 |


### Power Conversion Calc

[App page](https://appshunter.io/ios/app/power-conversion-calc/id6483929959)

**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 Power Conversion Calc free?

Power Conversion Calc is free to download, with no in-app purchases.

### Do Voltage Drop Calculator. or Power Conversion Calc have ads?

Voltage Drop Calculator. shows ads; Power Conversion Calc does not.

### Which is updated more often, Voltage Drop Calculator. or Power Conversion Calc?

Voltage Drop Calculator. ships an update every 3 months, and Power Conversion Calc every 3 months. Most recently, Voltage Drop Calculator. was updated on October 18, 2026 and Power Conversion Calc on October 16, 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.*