Comparison

Gas Engineer App vs BoilerFix AI

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

Head to head
About

Gas Engineer App

Streamline your gas engineering business with this comprehensive mobile tool. Manage customer and job details, generate professional quotes and invoices, and create essential certificates securely. Reduce paperwork and accelerate payments for a more efficient workflow.

Highlights
  • Customer and job management
  • Quote and invoice generation
  • Certificate creation
  • Secure data storage
  • Reduced paperwork
  • Faster payments
Features
Read full description

An all-in-one gas engineer app to run your business on the go. Manage customers and job details, create and send professional quotes and invoices in minutes, and generate certificates with all the right information stored securely. Keep everything organised in one placeβ€”less paperwork, faster payments, and a smoother workflow. Subscription Information Gas Engineer offers auto-renewable subscriptions. Monthly Subscription β€’ Subscription Length: 1 Month Yearly Subscription β€’ Subscription Length: 1 Year β€’ Payment will be charged to your Apple ID account at confirmation of purchase. β€’ Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. β€’ Your account will be charged for renewal within 24 hours prior to the end of the current period. β€’ You can manage and cancel subscriptions in your App Store Account Settings after purchase. Privacy Policy: https://gasengineerapp.co.uk/privacy-policy/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

BoilerFix AI

A comprehensive mobile toolkit designed for UK Gas Safe registered heating engineers. It consolidates fault code databases, control guides, AI diagnostics, customer management, and administrative tools into a single, offline-capable application.

Highlights
  • Fault Code Database (12 manufacturers)
  • AI Diagnostic Assistant
  • Boiler Passport (QR-linked service history)
  • Customer Hub & Job Calendar
  • CP12 Certificates generation
  • Invoicing & Bookkeeping
  • Offline functionality
Features
Read full description

BoilerFix AI is the complete professional toolkit for UK Gas Safe registered heating engineers β€” built by an engineer with 25 years on the tools, for engineers. Stop juggling multiple apps, manuals and websites on a job. BoilerFix AI puts everything you need in one place, even when you're working in a signal blackspot. What's included Fault Code Database β€” over 1,868 fault codes covering 12 major manufacturers including Worcester Bosch, Vaillant, Baxi, Ideal, Potterton, Glow-worm, Alpha, Ariston, Intergas, Viessmann, Main and Vokera. Search by code, browse by manufacturer, get clear diagnostic guidance. Controls Database β€” over 131 heating controls with full programming guides, wiring diagrams and troubleshooting for the most common controllers fitted in UK properties. AI Diagnostic Assistant β€” describe a fault in plain language and get instant suggestions on likely causes and the correct diagnostic steps. Boiler Passport β€” generate QR-linked boiler service histories that customers can scan to see complete records of every visit. Customer Hub & Job Calendar β€” manage your customers, schedule jobs and track service history in one place. CP12 Certificates β€” generate professional landlord gas safety certificates and email them directly to customers as PDFs. Invoicing & Bookkeeping β€” create branded invoices, track payments and log expenses for your tax return. Built specifically for self-employed engineers. Site Passport β€” for council and housing association engineers, scan QR stickers fixed to properties to see complete site history. Cooker & Hob Installation Guide β€” full reference for safe installation in domestic and commercial settings. Combustion Data Tool β€” log and reference flue gas analyser readings for service records. Subscription tiers Basic β€” Diagnostic tools, calculators, certificates and reference material. Β£3.99 per month. Pro β€” Everything in Basic plus Customer Hub, Job Calendar, Invoicing, Bookkeeping and Boiler Passport. Β£5.99 per month. 7-day free trial. Cancel anytime in your iPhone Settings. Built for life on the tools Works offline once content is loaded β€” essential when you're in a basement boiler room with no signal. Optimised for use with cold or wet hands. Clear large text. No ads. No data sold to third parties. Designed for UK Gas Safe registered heating engineers. Sign-up requires self-certification as a gas engineer. Privacy Policy: https://boilerfix-ai.co.uk/privacy-policy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Questions or feedback? Email boilerfixai@gmail.com

Screenshots

Gas Engineer App3 screens
BoilerFix AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Gas Engineer App at none against BoilerFix AI's 2. On price, review sentiment, update cadence and ads there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. BoilerFix AI sells 2 in-app purchases, starting at $3.99 per month. Gas Engineer App asks for nothing beyond the download.

UpkeepUpdate frequency

Gas Engineer App ships an update every 3 days, BoilerFix AI every 2 days. The most recent releases landed on September 24, 2026 and September 17, 2026 respectively.

Scorecard1 real difference Β· 7 level
Gas Engineer App versus BoilerFix AI: the parameters behind the verdict, then further details
ParameterGas Engineer AppBoilerFix AI
PriceFreeFree
Positive reviews100.0% of reviews100.0% of reviews
Update frequencyEvery 3 daysEvery 2 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationSubscriptionSubscription
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.0 β€” better
Further details β€” not scored
Size62 MB7 MB
Age rating4+12+
DeveloperEsoftArenaStephen Bird

Customer experience

Gas Engineer App

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

BoilerFix AI

Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Gas Engineer App

No in-app purchases

2 purchases

BoilerFix AI

Subscriptions2
  • BoilerFix AI Basic7 Days trial$3.991 Month
  • BoilerFix AI Pro7 Days trial$5.991 Month

Questions

Is Gas Engineer App free?
Gas Engineer App is free to download, with no in-app purchases.
Is BoilerFix AI free?
BoilerFix AI is free to download, with in-app purchases available.
Do Gas Engineer App or BoilerFix AI have ads?
Neither Gas Engineer App nor BoilerFix AI shows ads.
Which is updated more often, Gas Engineer App or BoilerFix AI?
Gas Engineer App ships an update every 3 days, and BoilerFix AI every 2 days. Most recently, Gas Engineer App was updated on September 24, 2026 and BoilerFix AI on September 17, 2026.

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