# ACS Gas Pro vs Fire Code Mastery

The clearest difference is review sentiment: Fire Code Mastery at 100% against ACS Gas Pro's 50%. Fire Code Mastery also leads on update cadence (every 5 days vs every 3 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. ACS Gas Pro sells 4 in-app purchases, starting at $9.99 per month and Fire Code Mastery sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ACS Gas Pro ships an update every 3 weeks, Fire Code Mastery every 5 days. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | ACS Gas Pro | Fire Code Mastery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (18 ratings)](https://appshunter.io/ios/app/fire-code-mastery/id6760103585/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 51 MB | 71 MB |
| Requires iOS | 16.6 | **16** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eknath Kadam](https://appshunter.io/developer/465355268) | [Webrich Software Limited](https://appshunter.io/developer/290203591) |

## What reviewers say

### ACS Gas Pro

[App page](https://appshunter.io/ios/app/acs-gas-pro/id1047795350)

Prepare for UK gas engineer certification with this comprehensive exam prep tool. It offers over 1,250 practice questions across all six ACS modules, on-site calculators, reference materials, and a logbook for tracking renewals and CPD.

**Highlights:** 1,260+ exam questions with explanations, On-site calculators for gas engineers, Quick reference cheat sheets, CP12 / renewal / CPD logbook, Module-specific mock tests, Voice-over support for hands-free study, Offline functionality

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Question Bank | $9.99 | per month |
| Full Question Bank | $14.99 | per 3 months |
| Full Question Bank | $19.99 | per 6 months |
| Full Question Bank | $29.99 | per year |


### Fire Code Mastery

[App page](https://appshunter.io/ios/app/fire-code-mastery/id6760103585)

Prepare for fire alarm system certification exams with over 3,400 practice questions and detailed explanations. Includes mock tests, flashcards, 11 fire code calculators, and case studies to reinforce learning. Track your progress across all chapters of the NFPA 72 2025 Edition.

**Highlights:** 3,400+ practice questions, Detailed explanations with section references, Timed mock tests, Flashcard revision mode, 11 fire code calculators, AI-powered case studies, Progress tracking with visual charts

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Question Bank | $9.99 | per month |
| Full Question Bank | $19.99 | per 3 months |
| Full Question Bank Half Yearly | $29.99 | per 6 months |
| Full Question Bank | $39.99 | per year |


## Frequently asked questions

### Is ACS Gas Pro free?

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

### Is Fire Code Mastery free?

Fire Code Mastery is free to download, with in-app purchases available.

### Do ACS Gas Pro or Fire Code Mastery have ads?

Neither ACS Gas Pro nor Fire Code Mastery shows ads.

### Which is updated more often, ACS Gas Pro or Fire Code Mastery?

ACS Gas Pro ships an update every 3 weeks, and Fire Code Mastery every 5 days. Most recently, ACS Gas Pro was updated on October 16, 2026 and Fire Code Mastery on October 15, 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.*