# Guest Technician vs Edison XRef

The clearest difference is update cadence: Guest Technician at every 4 months against Edison XRef's every 75 months. 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.

Guest Technician ships an update every 4 months, Edison XRef every 75 months. The most recent releases landed on October 13, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Guest Technician | Edison XRef |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 75 months |
| Size | 66 MB | 49 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Service Software Solutions, LLC.](https://appshunter.io/developer/1063706561) | [Cooper Bussmann, LLC](https://appshunter.io/developer/609315535) |

## What reviewers say

### Guest Technician

[App page](https://appshunter.io/ios/app/guest-technician/id1156767147)

**Features:** macOS Compatibility

**In-app purchases:** none


### Edison XRef

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Guest Technician free?

Guest Technician is free to download, with no in-app purchases.

### Is Edison XRef free?

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

### Do Guest Technician or Edison XRef have ads?

Neither Guest Technician nor Edison XRef shows ads.

### Which is updated more often, Guest Technician or Edison XRef?

Guest Technician ships an update every 4 months, and Edison XRef every 75 months. Most recently, Guest Technician was updated on October 13, 2026 and Edison XRef on October 26, 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.*