# MasterElec vs FieldVolt Electrical

The clearest difference is ratings volume: MasterElec at 4 against FieldVolt Electrical's 1. FieldVolt Electrical's advantage is iOS requirement (13.0 vs 17.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. MasterElec sells 2 in-app purchases, starting at $4.99 per 7 days and FieldVolt Electrical sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for MasterElec against 5.0 for FieldVolt Electrical. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

MasterElec ships an update every 3 months, FieldVolt Electrical every 2 months. The most recent releases landed on September 23, 2026 and August 3, 2026 respectively.

## The numbers

| Metric | MasterElec | FieldVolt Electrical |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/masterelec-nec-code-guide/id6760912109/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/fieldvolt-electrical/id6761079218/reviews) |
| Number of ratings | **4** | 1 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Freemium | Freemium |
| Size | 28 MB | 66 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TWOSCRIPTS LABS INC.](https://appshunter.io/developer/1861222980) | [MATTHEW DAVID KOVALIK](https://appshunter.io/developer/1887675427) |

## What reviewers say

### MasterElec

[App page](https://appshunter.io/ios/app/masterelec-nec-code-guide/id6760912109)

A voice-powered assistant for electricians that provides offline access to NEC references and professional calculators. Quickly get answers to code questions and perform calculations without needing an internet connection.

**Highlights:** Voice-first interface for queries, 100% offline functionality, NEC reference access, Professional electrical calculators, Bookmark and export calculations, Free daily voice queries

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Susbcription | $4.99 | per 7 days |
| Annual Subscription | $39.99 | per year |


### FieldVolt Electrical

[App page](https://appshunter.io/ios/app/fieldvolt-electrical/id6761079218)

This app assists electricians with complex calculations for pipe bending, conduit fill, ampacity, voltage drop, and box fill. It also offers a professional subscription for expert electrical advice and troubleshooting.

**Highlights:** Pipe bending calculations (offsets, saddles), Conduit fill calculations (NEC Table 1), Ampacity and wire sizing, Voltage drop calculations, Box fill calculations (NEC 314.16), Expert electrical advice subscription

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FieldVolt Pro | $4.99 | per month |
| FieldVolt Pro | $49.99 | per year |


## Frequently asked questions

### Is MasterElec free?

MasterElec is free to download, with in-app purchases available.

### Is FieldVolt Electrical free?

FieldVolt Electrical is free to download, with in-app purchases available.

### Which has better reviews, MasterElec or FieldVolt Electrical?

MasterElec and FieldVolt Electrical are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do MasterElec or FieldVolt Electrical have ads?

Neither MasterElec nor FieldVolt Electrical shows ads.

### Which is updated more often, MasterElec or FieldVolt Electrical?

MasterElec ships an update every 3 months, and FieldVolt Electrical every 2 months. Most recently, MasterElec was updated on September 23, 2026 and FieldVolt Electrical on August 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.*