# MasterElec vs Box Fill Pro

The clearest difference is iOS requirement: Box Fill Pro at 15.1 against MasterElec's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MasterElec sells 2 in-app purchases, starting at $4.99 per 7 days and Box Fill Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | MasterElec | Box Fill Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/masterelec-nec-code-guide/id6760912109/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Freemium | — |
| Size | 29 MB | 48 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TWOSCRIPTS LABS INC.](https://appshunter.io/developer/1861222980) | [BRUCE RAY MCCAMPBELL](https://appshunter.io/developer/6772438648) |

## 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 |


### Box Fill Pro

[App page](https://appshunter.io/ios/app/box-fill-pro-electrician/id6780626078)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Box Fill Pro | $4.99 | one-time |


## Frequently asked questions

### Is MasterElec free?

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

### Is Box Fill Pro free?

Box Fill Pro is free to download, with in-app purchases available.

### Do MasterElec or Box Fill Pro have ads?

Neither MasterElec nor Box Fill Pro shows ads.

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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.*