Gas Engineer Software vs BOOKABUILDER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Create industry certificates
- Issue quotes and invoices
- Schedule jobs with calendar
- Manage team and customers
- Automated service reminders
- Offline access
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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
BOOKABUILDER
Connects tradespeople with homeowners for home improvement projects. Offers job notifications, direct client communication, and professional invoicing tools. Streamlines the process for tradespeople to find and manage work.
- Job lead notifications
- Direct client chat
- Professional invoicing
- Partner scheme updates
- Manage job leads
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BookaBuilderUK is the UK's fastest growing platform that matches tradespeople with homeowners looking for home improvement. Sign-up and login to get notifications for your new local job leads, chat directly with potential clients about their jobs, create and send professional invoices, be the first to hear about partner schemes and much more! With all you need in the BookaBuilderUK app, all you need to do is focus on getting the job done.
Screenshots
Verdict
The clearest difference is in-app purchases: BOOKABUILDER at none against Gas Engineer Software's 1. Gas Engineer Software's advantage is update cadence (weekly vs every 2 months) and review sentiment (85% vs 59%). On price, ads, monetization model and device support 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
Both are free to download. Gas Engineer Software sells 1 one-off in-app purchase. BOOKABUILDER asks for nothing beyond the download.
Gas Engineer Software ships an update weekly, BOOKABUILDER every 2 months. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.
| Parameter | Gas Engineer Software | BOOKABUILDER |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (20 ratings) — better |
| Positive reviews | 84.6% of reviews — better | 59.1% of reviews |
| Number of ratings | — | 20 — better |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 196 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Software Works for You Ltd | Palace Media Ltd |
Customer experience
Gas Engineer Software
BOOKABUILDER
User reviews
Gas Engineer Software
From App Store reviewsWhat 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
BOOKABUILDER
From 20 App Store ratingsWhat we love
- 👍 Steady supply of leads (HTR Construction)
- 👍 Found a job quickly (Always_expected 55, Spring.Caradoc, Phoenix Hugen, 102.TH, blue110011, Fergal's 89, Yuncharoen AA, Cado N. Brishen, shironlove38, QuicklyForget 801, Sherwin - Blue, Dontcare0027, Phelim 360, John David 8, JulieBazar, Deduocbat, Liamm0, XBemBemX, canhhoanga50, Flora Cavina, Fivos Spyrides ᴬᴱᴸ, Petra Liberty, Saobaygio4, Gabriel__Horton, quadangcay, giodongsang61, ngaynaohoa, huongdang0313, Kfjdksksjjsjs, Matteo Gori, Emanuele Furnari, longanhbongnho, ngamhoaroi4, Aslam Doggar, lamduocdieudo, Sajjad gujjar, emdamangden, khongcanlido572, Curtis_Good, <3 Tommy <3, Anhchua Tungnoi, LucianoOngenda, Phil Joness, namcntt, MonsterOnEarthUK, teamo1402, An_Junny, ryuhuyn, solimature, emlacuopdayuk, emlacuopdayuk1, tiqlmmo789, Wilsondhms)
Room to improve
- 😞 Waste of money (hukunaaaaaa, Crispycrew, Markf92, _.0m1r, Jeetpal5338, Cz3.01, leemac68, George Ross 74, 13ennoB, Ralph233, Roshoward, leoapa, Tick133, Don’t work whit them, Balli kaur, Zofda, Sp136, Contractor !…, John7t, GB PLASTERING, Khalid12345678, Kneatknight, jasonwong422, Mrs majick, kent plasterer)
- 😞 Misleading promises (hukunaaaaaa, jaycole3333333333, Markf92, George Ross 74, 13ennoB, Ralph233, Sp136, John7t, Khalid12345678)
- 😞 Poor quality leads (BulaBasmach, George Ross 74, 13ennoB)
- 😞 Customers don't respond (BulaBasmach)
- 😞 Jobs sent to too many traders (BulaBasmach)
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
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- Cheaper option for extra engineers
BOOKABUILDER
Reported bugs
10 issues- App is 'stuck' and won't progress during sign-up
- App is not working, customer service is rubbish
- App not fully working
- App crashes and doesn't load jobs properly
- Leads do not sync between web and app
Show 5 moreShow fewer
- Messages notifications on web app don't work
- Cannot view messages from web on mobile
- Invalid email or password for app login
- New bug fix has messed up everything
- App is temperamental and never loads up jobs properly
Requested features
5 requests- Improve app stability and fix bugs
- Enhance search engine functionality
- Offer monthly/cancel anytime contracts
- Improve customer service responsiveness
- Provide evidence of paid advertising
In-app purchases
Gas Engineer Software
- Single Engineer - 12 Months Subscription$19.00
BOOKABUILDER
No in-app purchases
Questions
Is Gas Engineer Software free?
Is BOOKABUILDER free?
Do Gas Engineer Software or BOOKABUILDER have ads?
Which is updated more often, Gas Engineer Software or BOOKABUILDER?
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