# Fault Finding & Multimeters vs Gas

The clearest difference is price: Gas at Free against Fault Finding & Multimeters's $4.99. Fault Finding & Multimeters's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 13.4). On update cadence, ads and device support there is nothing between them.

Gas is free to download; Fault Finding & Multimeters costs $4.99 up front. Gas sells 1 one-off in-app purchase. Fault Finding & Multimeters asks for nothing beyond the download.

Fault Finding & Multimeters ships an update every 4 months, Gas every 6 months. Both last shipped on October 14, 2026.

## The numbers

| Metric | Fault Finding & Multimeters | Gas |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 6 months |
| Monetization | Paid | — |
| Size | 37 MB | 10 MB |
| Requires iOS | **9.0** | 13.4 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mr Combi Training](https://appshunter.io/developer/566867832) | [Iurii Dubrov](https://appshunter.io/developer/1632057221) |

## What reviewers say

### Fault Finding & Multimeters

[App page](https://appshunter.io/ios/app/fault-finding-and-multimeters/id1212143364)

Learn to use multimeters and perform electrical safety tests with this comprehensive guide. Covers fault finding procedures, testing various components like pumps, fans, and sensors, and understanding system operation. Ideal for new technicians and experienced engineers.

**Highlights:** Multimeter usage and settings, Electrical safety tests, Fault isolation procedures, Testing pumps, fans, and sensors, Understanding sequence of operation, 21 detailed chapters

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

**In-app purchases:** none


### Gas

[App page](https://appshunter.io/ios/app/gas-main/id1522466692)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get full App version | $7.99 | one-time |


## Frequently asked questions

### Is Fault Finding & Multimeters free?

Fault Finding & Multimeters costs $4.99, with no in-app purchases.

### Is Gas free?

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

### Do Fault Finding & Multimeters or Gas have ads?

Neither Fault Finding & Multimeters nor Gas shows ads.

### Which is updated more often, Fault Finding & Multimeters or Gas?

Fault Finding & Multimeters ships an update every 4 months, and Gas every 6 months. Most recently, Fault Finding & Multimeters was updated on October 14, 2026 and Gas on October 14, 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.*