Comparison

ACS Gas Pro vs Fire Code Mastery

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ACS Gas Pro

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
Read full description

ACS Gas Pro — the complete UK gas engineer toolkit. Over 1,250 exam questions across all six core ACS modules — CCN1, CENWAT, CKR1, CPA1, HTR1 and MET1 — plus on-site calculators, a Quick Reference cheat-sheet library, and MyACS, your CP12 / renewal / CPD logbook. Every question is grouped by sub-topic, with detailed explanations and clause-level references designed to match what you'll see on assessment day. Whether you're preparing for initial ACS certification, revising before re-assessment, or working on the tools, ACS Gas Pro is built for the job. CCN1 — CORE GAS SAFETY (743 questions) The foundation module every gas operative must pass. Topics include: • Flues & Spillage • Documentation & Legal Duties • Unsafe Situations & RIDDOR • CO Safety • Ventilation • Tightness Testing • Combustion Principles • Pipework & Fittings • Gas Rates & Pressures • Meter Outlet Operating Pressure • Appliance Safety Devices • Gas Emergency Actions • Emergency Isolation Controls • Meters & Controls • Purging • Customer Communication • Relighting Appliances APPLIANCE MODULES • CENWAT (119 questions) — Central Heating Boilers & Hot Water • CKR1 (93 questions) — Cookers • CPA1 (88 questions) — Combustion Performance Analysis • HTR1 (117 questions) — Fires & Wall Heaters • MET1 (100 questions) — Domestic Meters & Controls 10 ON-SITE CALCULATORS • Gas Rate (U6 / E6 meter, dial-revolution timing) • Ventilation Required (room sizing, high/low vents) • Tightness Test (U6, IGEM/UP/1B) • Boiler Sizing (heat-loss / DHW demand) • Calorific Value Lookup (NG / LPG) • CO/CO₂ Ratio (combustion analyser check) • Flue Termination Lookup (distances by appliance type) • Pipe Sizing (copper, steel, length & load) • Unit Converter (mbar, kW, m³/h, BTU) • Unsafe Situation Classifier (ID / AR — IGEM/G/11 Edition 2) QUICK REFERENCE CHEAT SHEETS Searchable cards covering flue distances, CO/CO₂ limits, standard appliance pressures, ventilation requirements, tightness-test pass/fail criteria, the Unsafe Situations Procedure, pipe-sizing tables and a gas-engineering glossary. MyACS — YOUR LOGBOOK • CP12 / Landlord Gas Safety Record log with PDF export • ACS renewal reminders — never miss a re-assessment date • CPD log with annual target tracking • Warning Notices (Immediately Dangerous / At Risk) with PDF export • Engineer profile (Gas Safe number, business details) auto-filled into every document • Daily safety refresher card and study streak KEY FEATURES • 1,260 questions with full explanations and diagrams • References to current standards — BS 6891:2015+A1:2019, BS 5440-1:2023, BS 5440-2:2023, BS 6172:2010+A1:2017, BS 669-1:2022, IGEM/G/11 Edition 2 and IGEM/G/13 • Module-specific Mock Tests, 50 questions each • Flash Cards for quick revision • Voice-over support (en-GB) for hands-free study on-site • Progress tracking with visual charts • PDF export of study reports, CP12 records and Warning Notices • iCloud sync across your devices • Works offline once downloaded WHO IT'S FOR • Engineers preparing for ACS initial assessment • Gas operatives revising before re-assessment • Apprentices working alongside their NVQ • Trainers reviewing module content • Working engineers needing on-site calculators and a CP12 logbook For revision purposes only — always verify against the current ACS scheme rules and manufacturer instructions before any gas work. Privacy Policy: https://www.webrichsoftware.com/privacy.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Fire Code Mastery

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
Read full description

Master NFPA 72 (National Fire Alarm and Signaling Code) with over 6,800 practice questions across the 2019 and 2022 Editions. Whether you're preparing for a NICET Fire Alarm Systems exam or strengthening your fire alarm code knowledge, this app is built as a focused study companion. COMPREHENSIVE QUESTION BANK Over 3,300 multiple-choice questions per edition, organized by NFPA 72 topic, with detailed explanations and section references. Learn not just the correct answer, but the reasoning behind it. TOPICS COVERED • Administration • Referenced Publications • Definitions • Documentation • Fundamentals of Fire Alarm Systems • Circuits and Pathways • Inspection, Testing, and Maintenance • Initiating Devices • Notification Appliances • Emergency Control Functions • Protected Premises Fire Alarm Systems • Emergency Communications Systems • Supervising Station Alarm Systems • Public Emergency Alarm Reporting Systems • Single- and Multiple-Station Alarms MOCK TESTS Simulate exam conditions with timed mock tests drawn randomly from all topics. Adjust the question count to match your study schedule. FLASH CARDS Flip through questions in flash card mode for quick, focused revision sessions. FIRE CODE CALCULATORS Purpose-built calculators for fire alarm and fire protection work: • Alarm Battery Sizing • Audibility • Detector Spacing • Extinguisher Requirements • Fire Pump Capacity • Fire Water Tank Sizing • NAC Loading • Occupant Load • Pipe Pressure Loss • Sprinkler Flow • Standpipe Demand • Voltage Drop CASE STUDIES Apply your knowledge to realistic fire alarm scenarios with AI-powered evaluation of your responses. PROGRESS TRACKING Track your performance across each topic, identify weak areas, and focus your revision where it matters most. ADDITIONAL FEATURES • Voice-over support for accessibility • Sort questions by section reference • Adjustable question count per session • Clean, distraction-free interface Based on NFPA 72 2019 and 2022 Edition content. Always confirm the required code edition for your exam using your Candidate Information Bulletin or licensing authority. This app is an independent study tool and is not affiliated with, endorsed by, or connected to NFPA, NICET, or any certification body like NICET Fire Alarm Systems Level I NICET Fire Alarm Systems Level II NICET Fire Alarm Systems Level III NICET Fire Alarm Systems Level IV NICET Inspection & Testing of Fire Alarm Systems Level I NICET Inspection & Testing of Fire Alarm Systems Level II ICC Commercial Fire Alarm Inspector ICC Commercial Fire Alarm Plans Examiner I / II ICC Fire Plans Examiner 2024 Older ICC 2021 code-year fire alarm exams Privacy Policy: https://webrichsoftware.com/privacypolicy.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ACS Gas Pro4 screens
Fire Code Mastery4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
ACS Gas Pro versus Fire Code Mastery: the parameters behind the verdict, then further details
ParameterACS Gas ProFire Code Mastery
PriceFreeFree
Rating—4.6 (18 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings—18 — better
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.616 — better
Further details — not scored
Size51 MB71 MB
Age rating4+4+
DeveloperEknath KadamWebrich Software Limited

Customer experience

ACS Gas Pro

Written reviews8 reviews
Positive50.0%
Neutral12.5%
Negative37.5%

Fire Code Mastery

All ratings18 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

ACS Gas Pro

Subscriptions4
  • Full Question Bank$9.991 Month
  • Full Question Bank$14.993 Months
  • Full Question Bank$19.996 Months
Show 1 more
  • Full Question Bank$29.991 Year
4 purchases

Fire Code Mastery

Subscriptions4
  • Full Question Bank$9.991 Month
  • Full Question Bank$19.993 Months
  • Full Question Bank Half Yearly$29.996 Months
Show 1 more
  • Full Question Bank$39.991 Year

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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