ACS Gas Pro

ACS Gas Pro

ACS Exam Prep - 6 Core Modules

0 ratings
8 reviews
Free
In-App Purchases

Price history


Details

Released
October 25, 2015
Updated
November 2, 2026

Features

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About

This app provides comprehensive study materials and tools for UK gas engineers preparing for ACS exams. It features over 1,300 practice questions, on-site calculators, quick reference guides, and a logbook for CP12 records and renewals.

✓1,300+ exam questions
✓On-site calculators
✓Quick reference cheat sheets
✓CP12/renewal logbook
✓Clause-level references
✓Progress tracking
✓PDF export
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What's New in ACS Gas Pro

16.3

November 2, 2026

• Pipe Sizing calculator rebuilt on the BS 6891 pressure-loss method, with fitting allowances that change with pipe size and separate tee options • Quick Reference pipe sizing updated with corrected capacities, fitting allowances and a 2 mbar LPG limit • Unsafe Situations updated: ECV let-by with no smell of gas is now At Risk, in line with IGEM/G/11 • Warning Notice guidance now uses the DANGER DO NOT USE label for ID and AR • Corrected two pipe sizing questions

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Subscriptions & In-App Purchases

Full Question Bank

Enable all 6 ACS modules with 700 questions.

$19.996 Months
How to cancel ACS Gas Pro subscription ⁉️

User reviews

Great for revising CCN1 safety

I used this during my CCN1 revision and the explanations made a big difference. The questions are clear and the sub-topic grouping helps me target weak areas, like flues/spillage and emergency actions. Offline mode also comes in handy on site or between calls.

Flash cards speed up recall for re-sits

For my re-assessment, I needed faster recall and the flash cards worked well. I’d do a quick round after reading explanations, then focus on the modules that were still uncertain. The app runs smoothly and the charts show progress over time.

Amazing

This is great prep tool as well as all calculators and QR screens make it very handy on job

IET wiring regulations questions

This app used to be the fully unlocked Electrical IET wiring regulations questions. This new update has completely changed its functionality to the Gas safe regulations. How was this approved?! It’s clearly gaming the App Store because it’s launching a brand new app off the back of the old one because it has high reviews. I’ve never seen an app do this before.

I complained to the developer and was given a link to an app similar to the original app but only subscription based. I’d payed for a fully unlocked version originally.

The “new” app also has predatory rates. £10 per month or £30 per year. With no option to fully unlock.
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Response from developer

Dear user, we have sent you the redemption code to upgrade to latest app which has plenty of new features and latest amendments. Hope this takes care of your concern.

Questions are all the same

All the questions are the same never change pointless

Developer apps

FAQ

What ACS modules does ACS Gas Pro cover?

ACS Gas Pro covers all six core ACS modules: CCN1 (Core Gas Safety), CENWAT (Central Heating Boilers & Hot Water), CKR1 (Cookers), CPA1 (Combustion Performance Analysis), HTR1 (Fires & Wall Heaters), and MET1 (Domestic Meters & Controls).

How many practice questions are available in ACS Gas Pro?

ACS Gas Pro offers a total of 1,325 practice questions across all modules, with detailed explanations and clause-level references to current standards.

Does ACS Gas Pro offer any on-site tools for gas engineers?

Yes, ACS Gas Pro includes 10 on-site calculators for tasks like gas rate calculation, ventilation requirements, tightness testing, and unit conversion, along with quick reference cheat sheets.

Can I track my progress with ACS Gas Pro?

Yes, ACS Gas Pro provides progress tracking with visual charts to help you monitor your learning and identify areas for improvement.

What kind of logbook features does ACS Gas Pro have?

The MyACS logbook feature allows you to record CP12/Landlord Gas Safety Records and Warning Notices with PDF export, set ACS renewal reminders, and track your Continuing Professional Development (CPD).

Is ACS Gas Pro available on multiple devices?

Yes, ACS Gas Pro supports iCloud sync, allowing you to access your study materials and progress across your iPhone and iPad devices.

What is the update frequency for ACS Gas Pro?

ACS Gas Pro was last updated on November 2, 2026, indicating a commitment to keeping the content current with the latest standards and regulations.

What are the subscription options for ACS Gas Pro?

ACS Gas Pro offers various subscription plans for the Full Question Bank, including monthly ($9.99), 3-month ($14.99), 6-month ($19.99), and annual ($29.99) options.