# Edison XRef vs Substation Short Circuit

The clearest difference is price: Edison XRef at Free against Substation Short Circuit's $12.99. Edison XRef also leads on iOS requirement (11.0 vs 18.0). Substation Short Circuit's advantage is update cadence (every 5 weeks vs every 75 months). On ads, in-app purchases and device support there is nothing between them.

Edison XRef is free to download; Substation Short Circuit costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Edison XRef ships an update every 75 months, Substation Short Circuit every 5 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Edison XRef | Substation Short Circuit |
| --- | --- | --- |
| Price | **Free** | $12.99 |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/substation-short-circuit/id6749871804/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 75 months | **Every 5 weeks** |
| Monetization | — | Paid |
| Size | 49 MB | 1 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) | [Northeastern Software Services LLC](https://appshunter.io/developer/1806845645) |

## What reviewers say

### Edison XRef

[App page](https://appshunter.io/ios/app/edison-xref/id1470236203)

**Features:** macOS Compatibility

**In-app purchases:** none


### Substation Short Circuit

[App page](https://appshunter.io/ios/app/substation-short-circuit/id6749871804)

This app assists electrical engineers and technicians in estimating fault current for equipment specification. It calculates various fault current values and compares them against equipment ratings, also providing conductor data and saving calculation history.

**Highlights:** Fault current estimation, Equipment rating comparison, Conductor ampacity table, Save and load calculations, iCloud sync, English and Spanish support

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

**In-app purchases:** none


## Frequently asked questions

### Is Edison XRef free?

Edison XRef is free to download, with no in-app purchases.

### Is Substation Short Circuit free?

Substation Short Circuit costs $12.99, with no in-app purchases.

### Do Edison XRef or Substation Short Circuit have ads?

Neither Edison XRef nor Substation Short Circuit shows ads.

### Which is updated more often, Edison XRef or Substation Short Circuit?

Edison XRef ships an update every 75 months, and Substation Short Circuit every 5 weeks. Most recently, Edison XRef was updated on October 26, 2026 and Substation Short Circuit on October 25, 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.*