# ACS GAS CCN1 EXAMS REVISION — Pass your ACS CCN1 Gas Test

> Pass your ACS CCN1 Gas Test (iPhone/iPad app by iStudy Applications.)

- Source: https://appshunter.io/ios/app/acs-gas-ccn1-exams-revision/id6805921099 (this page in markdown: same URL + `.md`)
- Developer: [iStudy Applications](https://appshunter.io/developer/1554839516)
- Category: Education, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 45 MB
- Languages: American English
- Released: 2026-09-07
- Data updated: 2026-09-18
- User reviews in markdown: https://appshunter.io/ios/app/acs-gas-ccn1-exams-revision/id6805921099/reviews.md

## What is ACS GAS CCN1 EXAMS REVISION?

Preparing for your ACS CCN1 Gas Assessment ? 

This app takes you from first revision to exam-ready and it's kept up to date with the latest gas-safety regulations, so you're always revising from the right material. Built around a full question bank covering every topic you'll be tested on, with four ways to learn:

- Study Mode — work through questions with instant feedback and clear explanations, so you learn as you go.
- Flashcards — quick-fire recall for key facts, classifications and figures, perfect for spare moments.
- Practice Mode — test yourself at your own pace, target your weak areas and track your progress.
- Mock Exam — a realistic timed test that mirrors the real assessment, so there are no surprises on the day.

Kept current

Gas-safety guidance changes, and out-of-date revision material is one of the most common complaints from candidates. This app is reviewed against current standards and reflects recent updates, including:

* IGEM/G/11 (Unsafe Situations Procedure) — updated to the latest amendments, including the current ID/AR classifications and RIDDOR reporting criteria.
* Gas quality (GS(M)R) — the revised Wobbe number requirements that took effect in April 2025.
* IGEM/UP/1B Edition 4 (tightness testing and purging) — content prepared for the new edition, which becomes the applicable standard on 1 October 2026.
* Current British Standards referenced throughout, including BS 5440-1/-2:2023.

Whether you're a new entrant or an experienced engineer brushing up before reassessment, you can revise knowing you're working from the right material.

Terms of service : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy policy : https://nebularapps.wixsite.com/website/privacy-policy

*In-app purchase required to unlock all content.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| ACS Unlock All | $19.99 | per month |
| Unlock All Questions 3 Day Trial | $19.99 | per month |



## Version history (last 1 release)

### 1.0 — 2026-09-07

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-18.*