# ESC Gas Certificate vs Installer Connect

The clearest difference is review sentiment: ESC Gas Certificate at 82% against Installer Connect's 36%. ESC Gas Certificate also leads on iOS requirement (11.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 16, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | ESC Gas Certificate | Installer Connect |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **81.8% of reviews** | 36.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 8 MB | 23 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Easy Safety Cert Ltd](https://appshunter.io/developer/594703993) | [Ideal Boilers](https://appshunter.io/developer/1326270378) |

## What reviewers say

### ESC Gas Certificate

[App page](https://appshunter.io/ios/app/esc-gas-certificate/id596456132)

This app helps gas engineers quickly create and email professional gas safety certificates directly from their iPhone or iPad. It streamlines the process, saving time and money with features like digital signatures and an address book.

**Highlights:** Create gas safety records, Service/Maintenance checklist, Email certificates to clients, Digital signature capture, Address book integration, Personalize certificates, Auto-save certificates

**Features:** macOS Compatibility

**In-app purchases:** none


### Installer Connect

[App page](https://appshunter.io/ios/app/installer-connect/id1483057431)

This app helps registered heating installers manage their work and earn rewards. Features include product registration, appointment planning, and access to marketing materials. It's designed to streamline daily tasks and offer incentives for using specific brands.

**Highlights:** Barcode product registration, Registration history management, Appointment and service reminders, Accreditation program access, Local sales manager contact, Marketing literature access

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

**In-app purchases:** none


## Frequently asked questions

### Is ESC Gas Certificate free?

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

### Is Installer Connect free?

Installer Connect is free to download, with no in-app purchases.

### Do ESC Gas Certificate or Installer Connect have ads?

Neither ESC Gas Certificate nor Installer Connect shows ads.

### Which is updated more often, ESC Gas Certificate or Installer Connect?

ESC Gas Certificate ships an update every 3 months, and Installer Connect every 3 months. Most recently, ESC Gas Certificate was updated on October 16, 2026 and Installer Connect on September 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.*