# Fault Code Library vs WireMaster

The clearest difference is update cadence: WireMaster at every 4 months against Fault Code Library's every 17 months. Fault Code Library's advantage is price ($1.99 vs $4.99) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

Fault Code Library costs $1.99 and WireMaster $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fault Code Library ships an update every 17 months, WireMaster every 4 months. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Fault Code Library | WireMaster |
| --- | --- | --- |
| Price | **$1.99** | $4.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 4 months** |
| Size | 68 MB | 46 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HITS-UK](https://appshunter.io/developer/548316663) | [Yevhenii Kyriienko](https://appshunter.io/developer/1702764269) |

## What reviewers say

### Fault Code Library

[App page](https://appshunter.io/ios/app/fault-code-library/id1575364591)

**Features:** Vision Pro support

**In-app purchases:** none


### WireMaster

[App page](https://appshunter.io/ios/app/wiremaster/id6624310459)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fault Code Library free?

Fault Code Library costs $1.99, with no in-app purchases.

### Is WireMaster free?

WireMaster costs $4.99, with no in-app purchases.

### Do Fault Code Library or WireMaster have ads?

Neither Fault Code Library nor WireMaster shows ads.

### Which is updated more often, Fault Code Library or WireMaster?

Fault Code Library ships an update every 17 months, and WireMaster every 4 months. Most recently, Fault Code Library was updated on September 21, 2026 and WireMaster on September 8, 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.*