ACS Gas Pro is an app by Webrich Software in the Education category. It has no native code, so it runs on any Android processor.
It asks for 6 permissions, none of them sensitive. The app offers in-app purchases through Google Play.
What's new in v24-Aug-2026
Questions can now be read aloud.
Switch on Voice Over in Settings and each question is read to you as you reach it, along with the answer options. Answer one and you hear whether you were right, what the correct answer was, and the explanation behind it.
Pick the voice and the reading speed in Settings.
Description
From the listing uploaded by “emilnet87ii”.
ACS Gas Pro is a UK gas engineer study and field toolkit for ACS assessment revision, on-site calculations, quick gas safety reference, and MyACS record keeping.
Use it to revise for CCN1, CENWAT, CKR1, CPA1, HTR1 and MET1, practise module-specific questions, review detailed explanations, and keep practical tools close when you are working on the job.
ACS EXAM REVISION
- 1,062 ACS-style questions across six core modules
- CCN1 Core Gas Safety question bank
- CENWAT central heating boilers and hot water
- CKR1 cookers
- CPA1 combustion performance analysis
- HTR1 fires and wall heaters
- MET1 domestic meters and controls
- Topic-by-topic practice
- Module-specific mock tests
- Flash cards for quick revision
- Explanations, diagrams and references
- Progress tracking and review screens
ON-SITE GAS CALCULATORS
ACS Gas Pro includes 10 practical calculators for common domestic gas work and revision scenarios:
- Gas Rate
- Ventilation Required
- Tightness Test U6
- Boiler / Heat Loss
- Calorific Value
- CO / CO2 Ratio
- Flue Termination Distances
- Pipe Sizing
- Unit Converter
- Unsafe Situation Classifier
QUICK REFERENCE
Searchable reference cards cover common gas safety tables, checks and procedures, including:
- Flue terminal distances
- Ventilation requirements
- Tightness-test limits
- CO / CO2 ratio guidance
- Standard appliance pressures
- Unsafe Situations Procedure
- Pipe sizing tables
- Gas engineering glossary
MyACS LOGBOOK
MyACS helps you keep practical gas-engineer records on the device:
- CP12 / Landlord Gas Safety Record log
- ACS renewal reminders
- Gas Safe registration reminders
- CPD log with annual target tracking
- Warning Notices for unsafe situations
- Engineer profile for reports
- PDF export for selected records
- Daily safety refresher and study streak
WHO IT IS FOR
- Engineers preparing for ACS initial assessment
- Gas operatives revising before reassessment
- Apprentices building module knowledge
- Trainers reviewing ACS topic coverage
- Working engineers who want calculators and reference tables in one app
KEY SEARCH TERMS
ACS gas, CCN1, CENWAT, CKR1, CPA1, HTR1, MET1, Gas Safe, CP12, LGSR, gas safety, boiler, flue, ventilation, tightness test, combustion analysis, gas rate, pipe sizing, unsafe situations, RIDDOR, UK gas engineer, ACS revision, ACS mock test, gas exam prep.
For revision and reference purposes only. Always verify against current ACS scheme rules, UK regulations, Gas Safe guidance, IGEM documents, British Standards and manufacturer instructions before carrying out gas work.
Privacy Policy: https://webrichsoftware.com/privacy.html
Security & authenticity
Security rating: Trusted
Signing certificate
Certificate issued to “Eknath Kadam”Not the developer's name (“Webrich Software”). Names in certificates can't be verified, so this alone proves nothing.
Store checks and file details
Developer signature verifiedSep 2, 2026
Signed byCN=Eknath Kadam, OU=Android Dev, O=Eknath Kadam, L=Foster City, ST=CA, C=US
Uploaded by “emilnet87ii”Bronze tier · 923 followers · uploading since 2021
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Permissions (6)
ACS Gas Pro requests 6 permissions, none of them sensitive.
Full network accessandroid.permission.INTERNET
In-app purchases (Google Play Billing)com.android.vending.BILLING
Can I install this APK over the version I already have?
Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.
Is ACS Gas Pro free?
The APK is free to download, but the app offers in-app purchases through Google Play.
Is the ACS Gas Pro APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is 8886745a3fe6ba9cd334b8af1242535a.