# Voltage Drop Calculator. vs VDrop

The clearest difference is review sentiment: VDrop at 100% against Voltage Drop Calculator.'s 33%. VDrop also leads on in-app purchases (none vs 1) and ads (none vs shown). Voltage Drop Calculator.'s advantage is ratings volume (410 vs 3) and update cadence (every 3 months vs every 13 months). On price and device support there is nothing between them.

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

VDrop holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Voltage Drop Calculator. has 410 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of Voltage Drop Calculator.'s written reviews are positive against 100% of VDrop's.

Voltage Drop Calculator. ships an update every 3 months, VDrop every 13 months. The most recent releases landed on September 18, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Voltage Drop Calculator. | VDrop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (410 ratings)](https://appshunter.io/ios/app/voltage-drop-calculator/id1203737064/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/vdrop/id1461666751/reviews)** |
| Number of ratings | **410** | 3 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 13 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 51 MB | 13 MB |
| Requires iOS | 17.6 | **10.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Nebulous LLC](https://appshunter.io/developer/1448637140) |

## 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 |


### VDrop

[App page](https://appshunter.io/ios/app/vdrop/id1461666751)

This utility calculates voltage drop for electrical systems up to 600V. It provides detailed calculation outputs to help users verify results and build confidence in their electrical work. Custom voltage inputs are supported.

**Highlights:** Voltage drop calculations, Supports up to 600V, Custom voltage input, Detailed calculation outputs, User confidence building

**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 VDrop free?

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

### Which has better reviews, Voltage Drop Calculator. or VDrop?

VDrop is rated higher. Voltage Drop Calculator. averages 4.6 out of 5 from 410 ratings, while VDrop averages 5.0 from 3 ratings.

### Do Voltage Drop Calculator. or VDrop have ads?

Voltage Drop Calculator. shows ads; VDrop does not.

### Which is updated more often, Voltage Drop Calculator. or VDrop?

Voltage Drop Calculator. ships an update every 3 months, and VDrop every 13 months. Most recently, Voltage Drop Calculator. was updated on September 18, 2026 and VDrop on June 1, 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.*