# Gas Checker vs EON SMARTester

The clearest difference is update cadence: Gas Checker at every 3 weeks against EON SMARTester's every 10 months. Gas Checker also leads on iOS requirement (12.0 vs 15.5). 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.

Gas Checker ships an update every 3 weeks, EON SMARTester every 10 months. The most recent releases landed on June 9, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Gas Checker | EON SMARTester |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gas-checker/id523576969/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 61.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 10 months |
| Monetization | Free | — |
| Size | 234 MB | 48 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GasSoft limited](https://appshunter.io/developer/523576972) | [Steve Vick International Limited](https://appshunter.io/developer/1341887722) |

## What reviewers say

### Gas Checker

[App page](https://appshunter.io/ios/app/gas-checker/id523576969)

Streamline your gas and heating business with digital reporting and invoicing. Automate customer reminders, create PDF reports, and integrate with accounting software. Eliminate paper forms and manage all your job documentation efficiently.

**Highlights:** Create PDF reports (certificates, invoices, quotes), Automated customer reminders, Digital job sheets, Quickbooks/Xero integration, Cloud data sync, Eliminate paper forms

**Features:** macOS Compatibility

**In-app purchases:** none


### EON SMARTester

[App page](https://appshunter.io/ios/app/eon-smartester/id6753301868)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gas Checker free?

Gas Checker is free to download, with no in-app purchases.

### Is EON SMARTester free?

EON SMARTester is free to download, with no in-app purchases.

### Do Gas Checker or EON SMARTester have ads?

Neither Gas Checker nor EON SMARTester shows ads.

### Which is updated more often, Gas Checker or EON SMARTester?

Gas Checker ships an update every 3 weeks, and EON SMARTester every 10 months. Most recently, Gas Checker was updated on June 9, 2026 and EON SMARTester on September 9, 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.*