# Arc Flash Label Calculator vs VFD Cable Sizing Calc

The clearest difference is in-app purchases: VFD Cable Sizing Calc at none against Arc Flash Label Calculator's 1. Arc Flash Label Calculator's advantage is update cadence (fortnightly vs every 5 months) and device support (4 vs 2). On price and ads there is nothing between them.

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

Arc Flash Label Calculator ships an update fortnightly, VFD Cable Sizing Calc every 5 months. The most recent releases landed on October 23, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Arc Flash Label Calculator | VFD Cable Sizing Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (6 ratings)](https://appshunter.io/ios/app/arc-flash-label-calculator/id1363795374/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | Free | — |
| Size | 20 MB | 5 MB |
| Requires iOS | **9.0** | 16.5 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Octagon Seven LLC](https://appshunter.io/developer/1200115862) | [Southwire Company](https://appshunter.io/developer/440338423) |

## What reviewers say

### Arc Flash Label Calculator

[App page](https://appshunter.io/ios/app/arc-flash-label-calculator/id1363795374)

Calculate and generate arc flash labels for electrical equipment. Input data to produce PDF labels based on NFPA 70E standards, including incident energy and approach boundaries. Supports various circuit breakers, fuses, and voltage levels.

**Highlights:** Arc flash label calculation, NFPA 70E Annex D.4 methodology, Support for MCCB, ICCB, LSI, and fuses, Calculates Incident Energy, Arc Flash Boundary, Approach Boundaries, Generates PDF labels (4 per sheet), Supports low, medium, and high voltage equipment, Custom configurations for gap, distance, and time

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock High Voltage Arc Flash | $19.99 | 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 Arc Flash Label Calculator free?

Arc Flash Label 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 Arc Flash Label Calculator or VFD Cable Sizing Calc have ads?

Neither Arc Flash Label Calculator nor VFD Cable Sizing Calc shows ads.

### Which is updated more often, Arc Flash Label Calculator or VFD Cable Sizing Calc?

Arc Flash Label Calculator ships an update fortnightly, and VFD Cable Sizing Calc every 5 months. Most recently, Arc Flash Label Calculator was updated on October 23, 2026 and VFD Cable Sizing Calc on October 3, 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.*