Best BigChange Alternatives for Small UK Gas and Heating Teams
Compare six BigChange alternatives for small UK gas and heating teams, with a practical test for job records, quotes, invoices and gas paperwork.
For a small UK gas or heating team, start by testing Commusoft, Checker, Joblogic, Tradify, Fergus and ServiceM8. Choose by workflow: gas paperwork, job history, quoting and invoicing, scheduling depth, and ease for engineers on site. Run the same real job through two finalists before deciding.
BigChange takes work from boiler quote to install invoice. That broad operating model can suit a business that wants substantial scheduling, tracking and office control. It also supports landlord gas-safety checks, including CP12 and CP6, in its app, and says its Gas Safe partnership can populate on-site forms. Its reviewed product page establishes that a professional certificate can be created and shared instantly. A smaller team may instead want fewer moving parts, more trade-specific paperwork, or a simpler route from a customer enquiry to a paid invoice.
This guide compares the workflow each alternative puts at the centre. It does not assume that one platform is right for every firm. The useful question is which system preserves the job record your team actually needs without making every engineer carry unnecessary process.
What should you compare before leaving BigChange?
One real job
Recreate a recent boiler service, repair or installation from booking to payment.
The record
Check where notes, photos, reports, quotes, invoices and customer history live.
The handover
Ask an engineer and the person doing the accounts to complete their own part.
The total effort
Count retyping, workarounds, training and missed information, not only licence cost.
Which BigChange alternatives deserve a place on the shortlist?
| Alternative | Gas-document workflow established on the reviewed first-party page | What to test on your plan and device |
|---|---|---|
BigChange (baseline) | BigChange takes work from boiler quote to install invoice. Its plumbing and heating page says landlord CP12 and CP6 checks can be completed step by step in the app, with professional certificates shared instantly. | Can your engineer sign, send, store and retrieve the exact record on your plan and device, including in low signal? |
 Checker | Checker keeps each job, property, customer, report, quote and invoice together. It lets users create and sign reports on the job, send the PDF to the customer and store it against the right property. It saves the work on the device when the signal drops. | Does your exact plan include the reports and team access you need? |
 Commusoft | Commusoft’s mobile app lets engineers manage jobs, access service history, complete digital certificates and capture payments on site, even offline. Its gas page says CP12s can be completed in the mobile app and sent instantly. | Can an engineer sign a CP12 and retrieve it later from the job record? |
 Joblogic | Joblogic says its mobile app has gas safety certificates. It says digital compliance forms can issue certificates instantly and that engineers can store all records centrally with a full audit trail. | Can an engineer sign the finished form and complete it in low signal? |
 Tradify | Tradify lets users create, sign and send digital Landlord/Homeowner Gas Safety Records. Its current pricing page lists compliance certificates on the Pro plan. | Can the office retrieve the signed record, and can field work continue without signal? |
 Fergus | Fergus says EICRs, Gas Safety Certificates and compliance documents can be stored with the job. | Can engineers create, sign and send a certificate, including in low signal? |
 ServiceM8 | ServiceM8 says Electronic Forms can complete any kind of report, procedure or certificate on site and generate a professional PDF. It provides offline access to the app. Its pricing FAQ says on-site electronic Forms require the Forms add-on; customers on any plan, including Free, can buy pre-made Form Store forms, while building custom Forms requires Growing or higher. The reviewed pricing page does not identify a specific UK gas-safety form or state whether one is included or separately purchased. | Can engineers sign the chosen Form and find the finished PDF later? |
BigChange (baseline)
Gas-document workflow: BigChange takes work from boiler quote to install invoice. Its plumbing and heating page says landlord CP12 and CP6 checks can be completed step by step in the app, with professional certificates shared instantly.
Test closely: Can your engineer sign, send, store and retrieve the exact record on your plan and device, including in low signal?
Checker
Gas-document workflow: Checker keeps each job, property, customer, report, quote and invoice together. It lets users create and sign reports on the job, send the PDF to the customer and store it against the right property. It saves the work on the device when the signal drops.
Test closely: Does your exact plan include the reports and team access you need?
Commusoft
Gas-document workflow: Commusoft’s mobile app lets engineers manage jobs, access service history, complete digital certificates and capture payments on site, even offline. Its gas page says CP12s can be completed in the mobile app and sent instantly.
Test closely: Can an engineer sign a CP12 and retrieve it later from the job record?
Joblogic
Gas-document workflow: Joblogic says its mobile app has gas safety certificates. It says digital compliance forms can issue certificates instantly and that engineers can store all records centrally with a full audit trail.
Test closely: Can an engineer sign the finished form and complete it in low signal?
Tradify
Gas-document workflow: Tradify lets users create, sign and send digital Landlord/Homeowner Gas Safety Records. Its current pricing page lists compliance certificates on the Pro plan.
Test closely: Can the office retrieve the signed record, and can field work continue without signal?
Fergus
Gas-document workflow: Fergus says EICRs, Gas Safety Certificates and compliance documents can be stored with the job.
Test closely: Can engineers create, sign and send a certificate, including in low signal?
ServiceM8
Gas-document workflow: ServiceM8 says Electronic Forms can complete any kind of report, procedure or certificate on site and generate a professional PDF. It provides offline access to the app. Its pricing FAQ says on-site electronic Forms require the Forms add-on; customers on any plan, including Free, can buy pre-made Form Store forms, while building custom Forms requires Growing or higher. The reviewed pricing page does not identify a specific UK gas-safety form or state whether one is included or separately purchased.
Test closely: Can engineers sign the chosen Form and find the finished PDF later?
What is the current pricing basis?
Pricing below was reviewed on 24 September 2026. It is a starting-point comparison, not a like-for-like total-cost quote: user numbers, job volumes, optional services and contract terms can change the amount.
BigChange
Public pricing is not shown; its pricing page asks buyers to request pricing.
Commusoft
Pricing is discussed with its sales team, which recommends a plan and builds an accurate quote.
Checker
£10.99 LITE, £19.99 PRO and £25.99 PRO+ per month, plus VAT.
Joblogic
Standard starts from £45 per user per month, billed annually. Premium pricing is on request, and Enterprise has custom pricing.
Tradify
Lite starts at £34 per user per month; Pro is £37 per user per month.
Fergus
Essentials starts from £39 per month; Professional starts from £45 per month.
ServiceM8
The Free plan is £0 per month for one user and 30 jobs; Starter is £25 per month for unlimited users and 50 jobs.
When should a small team keep BigChange as the baseline?
BigChange takes work from boiler quote to install invoice. Its plumbing and heating page says landlord CP12 and CP6 checks can be completed step by step in the app, with professional certificates shared instantly. Keep it in the same trial as each alternative so the comparison uses one real gas or heating job.
Ask the engineer to create the specific record, sign it, send it to the customer, retrieve it later, and repeat the job without reliable signal. Check the exact plan and any required form features before comparing total effort.
When should a small team test Checker?
Test Checker when the report is part of the job record rather than an attachment assembled later. Checker keeps each job, property, customer, report, quote and invoice together. It lets users create and sign reports on the job, send the PDF to the customer and store it against the right property, and it saves the work on the device when the signal drops.
Checker’s monthly plans are £10.99 LITE, £19.99 PRO and £25.99 PRO+, plus VAT. Confirm the exact plan features and team access you need on the Checker pricing page, then test the relevant Checker features with one of your own jobs. Gas-focused teams can also review the gas engineer workflow.
When should a small team test Commusoft?
Put Commusoft on the shortlist when your jobs need a structured field-to-office handover and engineers must still reach important information when the signal drops. Its first-party gas page says engineers can complete digital certificates, including CP12s, in the mobile app and send them instantly.
The deciding question is operational weight. A growing firm may value configuration and control; a very small team may prefer a shorter setup. Test signing and retrieval against the exact reports your business issues.
When should a small team test Joblogic?
Put Joblogic through a serious trial when the business needs more than a simple diary and invoice tool. Its plumbing and heating page says its mobile app has gas safety certificates, digital compliance forms can issue certificates instantly, and records can be stored centrally with a full audit trail.
Build the test around a reactive callout and a recurring maintenance visit. Test signing and low-signal completion before choosing it for a gas-document workflow.
When should a small team test Tradify?
Tradify is a sensible trial candidate when the main goal is to keep everyday commercial admin in one clear flow. Recreate an enquiry that becomes a quote, a scheduled job and an invoice, then ask whether anything important is missing from the final record.
For gas and heating work, make the paperwork test explicit. Tradify says its app can create, sign and send digital Landlord/Homeowner Gas Safety Records, and its pricing page lists compliance certificates on Pro. Test office retrieval and low-signal completion on your own devices.
When should a small team test Fergus?
Fergus deserves a closer look when knowing the cost and margin of each job is central to the buying decision. Its first-party page says EICRs, Gas Safety Certificates and compliance documents can be stored with the job, alongside inspection records, site safety documentation and photos.
Use a real installation with labour, materials, supplier paperwork and a variation. Test creation, signing, sending and low-signal handling with those exact documents.
When should a small team test ServiceM8?
ServiceM8 is worth testing when the priority is a straightforward mobile route through jobs, site evidence, quotes and invoices. Its Electronic Forms can complete a report, procedure or certificate on site and generate a professional PDF, and the app can be used without internet connectivity. The pricing FAQ says on-site electronic Forms require the Forms add-on. Customers on any plan, including Free, can buy pre-made Form Store forms. Building custom Forms requires Growing or higher. The reviewed pricing page does not identify a specific UK gas-safety form or state whether one is included or separately purchased.
Use the same devices your engineers already carry and test the workflow in a low-signal location. Test signing and retrieval of the finished PDF against the exact paperwork your business uses.
How should you run the final trial?
Set the scenario
Use a real job with a customer, property, quote, site evidence, paperwork and invoice.
Use the field device
Ask the engineer to complete the site work on the phone or tablet they will actually use.
Complete the office work
Have the office find the record, issue the invoice and retrieve the paperwork without help.
Compare the friction
Record missing steps, duplicate entry, training questions and the time needed to finish the job.
Frequently asked questions
What should a small gas or heating team test first?
Start with one recent job that includes customer details, a quote, site notes, paperwork and an invoice. Rebuild it in two shortlisted products and compare the time, missing steps and retyping.
Should we choose the platform with the longest feature list?
No. Choose the workflow your team can complete reliably. A feature only matters when it replaces a real task, preserves necessary information or makes the handover easier.
How should we assess gas paperwork?
List the reports your team actually issues. In each trial, check how the report is created, signed, sent, stored against the correct property and found again on the next visit.
Should price decide the choice?
Use price as one part of total effort. Include setup, training, duplicate entry, add-ons and the time required to correct or retrieve a job record.
Authoritative sources
- BigChange plumbing and heating software
- BigChange pricing
- Commusoft gas engineer software
- Commusoft pricing approach
- Checker job management software
- Checker pricing
- Checker app features
- Checker gas engineer software
- Joblogic plumbing and heating software
- Joblogic pricing
- Tradify forms and certificates
- Tradify pricing
- Fergus job management software
- Fergus pricing
- ServiceM8 pricing and forms
Test the whole job, not just the demo
Try Checker with a real customer, property, report, quote and invoice, then compare the completed record with your other finalist.
Get Started Free