# Voltage Drop Calculator. vs Meterbox Pro

The clearest difference is in-app purchases: Meterbox Pro at none against Voltage Drop Calculator.'s 1. Meterbox Pro also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 3 months). Voltage Drop Calculator.'s advantage is review sentiment (33% vs 0%). 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. Meterbox Pro asks for nothing beyond the download.

Voltage Drop Calculator. ships an update every 3 months, Meterbox Pro every 2 weeks. The most recent releases landed on October 18, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Voltage Drop Calculator. | Meterbox Pro |
| --- | --- | --- |
| 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** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 51 MB | 75 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [V PUGAZHENTHI](https://appshunter.io/developer/491898049) | [Shenzhen Everbest Machinery Industry Co.,Ltd](https://appshunter.io/developer/564470332) |

## 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 |


### Meterbox Pro

[App page](https://appshunter.io/ios/app/meterbox-pro/id1231364276)

This professional software connects to CEM instruments to enhance measurement efficiency and quality. Users can visualize data, log and share measurements, and manage their data effectively.

**Highlights:** Connects to CEM instruments, Enhances measurement efficiency, Improves measurement quality, Data logging and sharing, Measurement visualization, Data management

**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 Meterbox Pro free?

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

### Do Voltage Drop Calculator. or Meterbox Pro have ads?

Voltage Drop Calculator. shows ads; Meterbox Pro does not.

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

Voltage Drop Calculator. ships an update every 3 months, and Meterbox Pro every 2 weeks. Most recently, Voltage Drop Calculator. was updated on October 18, 2026 and Meterbox Pro on October 15, 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.*