Comparison

Gas Engineer Software vs Commusoft

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

Head to head
About

Gas Engineer Software

This comprehensive app helps gas, oil, and plumbing professionals streamline their business operations. It allows for the creation of industry-specific certificates, issuance of quotes and invoices, and efficient job scheduling. Manage your team, customers, and finances from any device, anywhere, saving time and boosting revenue.

Highlights
  • Create industry certificates
  • Issue quotes and invoices
  • Schedule jobs with calendar
  • Manage team and customers
  • Automated service reminders
  • Offline access
Features
Read full description

Gas Engineer Software (GES) is more than just an easy-to-use gas certificate app. It’s an all-in-one gas engineer software perfect for heating professionals. Whether you’re a gas engineer, oil engineer, or plumber, use GES to create all your industry certificates & records, issue quotes & invoices, manage schedules, and lots more. Save hours each week and run a successful heating & plumbing business on any device, from anywhere, and at any time. • Average of 6.6 hours saved each week • Average revenue growth of 37% in the first year • Trusted by 6,000+ businesses • Set up in 3 minutes OVERVIEW — MAIN FEATURES • Gas app for issuing certificates, records, job sheets • Send quotes and issue invoices • Schedule jobs with an integrated calendar • Manage your team from anywhere • Automated boiler service reminders • Manage your customer database • Easy & organised job management • Accounting software integrations • Sync to web portal for easy office use • Full offline access OIL & GAS CERTIFICATE APP • Easily create all oil and gas certificates • Professional & accurate records compliant with the latest regulations. • Easily track, organise & manage historical records. GAS CERTIFICATES • Homeowner Gas Safety Record • Landlord Gas Safety Record • Gas Warning Notice • Gas Service Record • Gas Breakdown Record • Installation / Commissioning Checklist • ND Gas Safety Record • Leisure Industry Gas Safety Record • LPG Gas Safety Record • ND Gas Testing & Purging Record • ND Catering Record OIL CERTIFICATES • CD/10 Oil Firing Installation Completion Report • CD/11 Oil Firing Servicing and Commissioning Report • CD/12 Landlord Oil Installation Check • CD/14 Oil Warning and Advice Notice • TI/133D Domestic Oil Storage, Tank Spillage and Fire Risk Report QUOTING & INVOICING • See all invoices & unpaid jobs & let GES chase late payers with automatic reminders. • Send professional & customisable invoices seconds after the job has finished. • Get your quotes in before your competitors. Use template line items for fast quotes. • Quickly turn your quotes & estimates into invoices at the click of a button. JOB SCHEDULING • Simple & easy job creation for your team. • See where your engineers are and who is available at a glance. • Let engineers know what their schedule is without coming to the office. • Eliminate booking errors and conflicts. AUTOMATED REMINDERS • Email & SMS boiler service reminders to find extra work. • Quote follow-ups to win more jobs. • Invoice payment reminders so you don’t have to chase late payers. • All reminders are fully customisable USER & TEAM MANAGEMENT • Control what your team can see & do with user roles. • Easily assign jobs to the right engineers at the right time. • Full job history so you always know the ‘who’, ‘what’ & ‘when’ of every job. • Our gas app is very easy & quick for your team to use. CUSTOMER MANAGEMENT SOFTWARE (CRM) • Access detailed customer information in seconds • All information available on your mobile device • Keep all customer information in one consolidated place. • See which customer hasn’t paid & let our software send automated reminders. SOFTWARE INTEGRATIONS • Xero, QuickBooks & Sage accounting software • Anton, Kane & TPI flue gas analysers • Crezco open banking payments REQUEST A DEMO If you want to see the app in action or get a better idea of how it works, book a demo with our team. We’ll give you a thorough walkthrough & answer any questions. https://gasengineersoftware.co.uk/gas-engineer-software-demo/ QUESTIONS? Contact our customer support team at support@gasengineersoftware.co.uk or 0207 129 7058

About

Commusoft

This app streamlines operations for field service businesses, enabling efficient communication, real-time data access, and on-site job management. Technicians and managers can update schedules, complete digital forms, process invoices, and manage customer information from their mobile devices.

Highlights
  • Real-time syncing
  • Centralized data access
  • Digital custom forms
  • Invoicing and payments
  • Quotes and estimates
  • Parts and asset management
Read full description

Commusoft is an all-in-one system designed to streamline work, generate more business, and help provide world-class customer journeys. With the Commusoft mobile app, technicians and managers are empowered to efficiently communicate with the office, access work order and customer data, view and update schedules, complete forms and checklists, process invoices and payments - and more. Service businesses from a range of industries can utilize Commusoft, including: • HVAC • Plumbing • Electrical • Fire & Security • Roofing • Plus many others Effortlessly handle day-to-day work with powerful mobile features designed for field service: ‣ REAL-TIME SYNCING New appointments, job updates, and tasks sync in real time, so teams are always on the same page. Plus, technician actions trigger pre-set automations such as communications with customers. ‣ ALL DATA IN ONE PLACE Customer information, job reports, site photos, and asset data are all safely organized and accessible from anywhere. ‣ CUSTOM FORMS Easily complete digital custom forms and utilize auto-filled fields, dropdown questions, and e-signature capture. ‣ INVOICING & PAYMENTS Create invoices direct from the job site and send straight to the customer - or take payment immediately with our SumUp integration. ‣ QUOTES & ESTIMATES Complete professional, multi-option quotes and have customers sign off work immediately or email it to them to review and accept online. ‣ PARTS & ASSET MANAGEMENT Request parts from the office or order directly from a vendor - plus with inventory management, see exactly what you have in stock in your truck. ‣ SMARTPHONE & TABLET The Commusoft mobile app is available on both smartphones and tablet, depending on which you prefer. Please note, an active Commusoft account and login is required in order to use this app - learn more at www.commusoft.us.

Screenshots

Gas Engineer Software4 screens
Commusoft4 screens

Verdict

The call

The clearest difference is in-app purchases: Commusoft at none against Gas Engineer Software's 1. Gas Engineer Software's advantage is iOS requirement (15.0 vs 17.0). On price, review sentiment, update cadence and ads 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. Gas Engineer Software sells 1 one-off in-app purchase. Commusoft asks for nothing beyond the download.

UpkeepUpdate frequency

Gas Engineer Software ships an update weekly, Commusoft every 9 days. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

Scorecard3 real differences · 7 level
Gas Engineer Software versus Commusoft: the parameters behind the verdict, then further details
ParameterGas Engineer SoftwareCommusoft
PriceFreeFree
Rating—4.5 (6 ratings) — better
Positive reviews84.6% of reviews89.1% of reviews — better
Number of ratings—6 — better
Update frequencyWeekly — betterEvery 9 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size196 MB282 MB
Age rating4+4+
DeveloperSoftware Works for You LtdCommusoft Ltd

Customer experience

Gas Engineer Software

Written reviews65 reviews
Positive84.6%
Neutral3.1%
Negative12.3%

Commusoft

All ratings6 ratings
Positive83.3%
Neutral16.7%
Negative0.0%
Written reviews64 reviews
Positive89.1%
Neutral4.7%
Negative6.3%

User reviews

Gas Engineer Software

From App Store reviews

What we love

  • 👍 Easy to use
  • ⏱️ Time saver
  • 💼 Professional appearance
  • 📈 Scales with business growth
  • 🛠️ Reliable day-to-day

Room to improve

  • 💰 Price keeps increasing
  • 📉 No real improvement seen
  • 😠 Greed perceived
  • ⚠️ Unexpected maintenance
  • ✍️ Small font size

Commusoft

From 6 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Streamlines business operations
  • 📈 Helps business growth
  • 📧 Efficient invoicing and quoting
  • 📱 Great mobile app for engineers

Room to improve

  • 🐛 App crashes and bugs
  • 🐌 Slow syncing and uploading
  • 🔄 App restarts phone after update
  • 🗄️ Old app worked better
  • 🤔 Too rigid and unaccommodating

Bugs and requests

Gas Engineer Software

Reported bugs

5 issues
  • Unexpected site shutdowns
  • Syncing is slow
  • Glitches in invoicing following a job report
  • App has become very slow due to latest update
  • Not usable at present time

Requested features

6 requests
  • Add multiple picture attachments
  • Select several photos at once
  • Flag jobs as finished
  • Oil forms for non-OFTEC registered companies
  • Calculate pipe work volume and purge volume
Show 1 more
  • Cheaper option for extra engineers

Commusoft

Reported bugs

9 issues
  • Issues clocking in/out
  • Problems accepting and traveling
  • App causes phone to restart
  • App issues syncing after uploading pictures
  • Office can't see job status updates
Show 4 more
  • Constant crashes
  • Unable to read previous jobs
  • Unable to scroll through to read
  • Trackers stop working for hours or days

Requested features

3 requests
  • Allow changing new design back
  • Improve admin version for smaller screens/tablets
  • More flexibility in system for different business needs

In-app purchases

1 purchases

Gas Engineer Software

One-time1
  • Single Engineer - 12 Months Subscription$19.00
None

Commusoft

No in-app purchases

Questions

Is Gas Engineer Software free?
Gas Engineer Software is free to download, with in-app purchases available.
Is Commusoft free?
Commusoft is free to download, with no in-app purchases.
Do Gas Engineer Software or Commusoft have ads?
Neither Gas Engineer Software nor Commusoft shows ads.
Which is updated more often, Gas Engineer Software or Commusoft?
Gas Engineer Software ships an update weekly, and Commusoft every 9 days. Most recently, Gas Engineer Software was updated on October 17, 2026 and Commusoft on October 13, 2026.

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