# Substation Digital vs Master Electrician Guide

The clearest difference is iOS requirement: Substation Digital at 13.4 against Master Electrician Guide's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Substation Digital | Master Electrician Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Size | 42 MB | 2 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [International Organization for Substations Digital Development POWER VIEW](https://appshunter.io/developer/1760809328) | [JACOB LAWRENCE WYERS](https://appshunter.io/developer/1895767739) |

## What reviewers say

### Substation Digital

[App page](https://appshunter.io/ios/app/substation-digital/id6599860006)

**Features:** macOS Compatibility

**In-app purchases:** none


### Master Electrician Guide

[App page](https://appshunter.io/ios/app/master-electrician-guide/id6782430546)

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

**In-app purchases:** none


## Frequently asked questions

### Is Substation Digital free?

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

### Is Master Electrician Guide free?

Master Electrician Guide is free to download, with no in-app purchases.

### Do Substation Digital or Master Electrician Guide have ads?

Neither Substation Digital nor Master Electrician Guide 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.*