# GB Gas Tightness Testing vs Gas Engineer Software

The clearest difference is in-app purchases: GB Gas Tightness Testing at none against Gas Engineer Software's 1. GB Gas Tightness Testing also leads on review sentiment (100% vs 85%). Gas Engineer Software's advantage is update cadence (weekly vs every 12 months) and iOS requirement (15.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Gas Engineer Software sells 1 one-off in-app purchase. GB Gas Tightness Testing asks for nothing beyond the download.

GB Gas Tightness Testing ships an update every 12 months, Gas Engineer Software weekly. The most recent releases landed on October 5, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | GB Gas Tightness Testing | Gas Engineer Software |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 84.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 196 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [George A Brown](https://appshunter.io/developer/425897007) | [Software Works for You Ltd](https://appshunter.io/developer/771853288) |

## What reviewers say

### GB Gas Tightness Testing

[App page](https://appshunter.io/ios/app/gb-gas-tightness-testing/id428846431)

This app guides users through natural gas tightness testing procedures step-by-step. It includes timed tests with alarms and a visual manometer to display pressures. It also offers explanations of standing and working pressures for a comprehensive understanding.

**Highlights:** Step-by-step testing procedure, Countdown timers with alarms, Visual manometer for pressure display, Explanations of standing and working pressure, Natural Gas focus

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

**In-app purchases:** none


### Gas Engineer Software

[App page](https://appshunter.io/ios/app/gas-engineer-software-ges/id771853285)

This comprehensive app helps gas, oil, and plumbing professionals streamline their business operations. It allows for the creation of industry-specific certificates, issuance of quotes and invoices, and efficient job scheduling. Manage your team, customers, and finances from any device, anywhere, saving time and boosting revenue.

**Highlights:** Create industry certificates, Issue quotes and invoices, Schedule jobs with calendar, Manage team and customers, Automated service reminders, Offline access

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Single Engineer - 12 Months Subscription | $19.00 | one-time |

**What reviewers like**

- 👍 Easy to use
- ⏱️ Time saver
- 💼 Professional appearance
- 📈 Scales with business growth
- 🛠️ Reliable day-to-day

**What reviewers complain about**

- 💰 Price keeps increasing
- 📉 No real improvement seen
- 😠 Greed perceived
- ⚠️ Unexpected maintenance
- ✍️ Small font size

**Reported bugs**

- Unexpected site shutdowns
- Syncing is slow
- Glitches in invoicing following a job report
- App has become very slow due to latest update
- Not usable at present time

**Requested features**

- Add multiple picture attachments
- Select several photos at once
- Flag jobs as finished
- Oil forms for non-OFTEC registered companies
- Calculate pipe work volume and purge volume


## Frequently asked questions

### Is GB Gas Tightness Testing free?

GB Gas Tightness Testing is free to download, with no in-app purchases.

### Is Gas Engineer Software free?

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

### Do GB Gas Tightness Testing or Gas Engineer Software have ads?

Neither GB Gas Tightness Testing nor Gas Engineer Software shows ads.

### Which is updated more often, GB Gas Tightness Testing or Gas Engineer Software?

GB Gas Tightness Testing ships an update every 12 months, and Gas Engineer Software weekly. Most recently, GB Gas Tightness Testing was updated on October 5, 2026 and Gas Engineer Software on October 17, 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.*