simPRO vs BigChange: Which Enterprise Platform Fits a UK Trade Business?

Anyone comparing simPRO vs BigChange in 2026 should know one thing before the first sales call: both platforms belong to the same company.

Simpro Group bought BigChange in October 2024, and since May 2026, both products have run on the same AI layer. You are not choosing between two rival vendors. You are choosing between two products in one portfolio.

That does not make either a poor choice. Both are capable platforms with real strengths, and they solve different problems. simPRO handles projects, purchasing, and stock. BigChange wraps job management around a tracked fleet.

At iTrade, we build job management software for UK trade businesses, and we lose deals to both, so this comparison covers where each one wins, where the commercial terms deserve scrutiny, and whether your business needs an enterprise platform at all.

Quick Comparison: simPRO vs BigChange in the UK

Software	Best for	Starting price	HQ
iTrade	Trade businesses wanting one purpose-built app without enterprise cost or setup	£29 per field worker; office admins free	Global (UK-focused)
simPRO	Commercial contractors running multi-stage projects with real inventory	Quote-based	Australia (Brisbane)
BigChange	Fleet-led operations where vehicle tracking is operational	From £79.95 per user / month	UK (Leeds)

One Owner, Two Products: What the Acquisition Means for Buyers

Simpro Group acquired BigChange in October 2024, with previous owner Great Hill Partners retaining a minority stake. BigChange, founded in Leeds in 2013, joined a portfolio that already held simPRO, AroFlo and ClockShark. The group now reports more than 24,000 trade businesses and 450,000 users worldwide.

The products stayed separate, and both continue to sell into the UK market under their own names. In May 2026, Simpro Group launched Lightning, an AI operating layer built on an orchestration engine called Cooper. It shipped simultaneously as Simpro Lightning and BigChange Lightning, alongside AroFlo Lightning in Australia and New Zealand. The group described it as its largest single product release.

For a buyer, three practical points follow. Shared engineering means new capability now arrives across both products together, so an AI feature you see demonstrated in one is likely coming to the other.

Overlapping portfolios eventually invite consolidation decisions, which makes a question about long-term roadmap commitment worth asking in writing. And a multi-year contract carries different weight when the alternative you would switch to answers to the same owner.

None of that is a reason to rule either out. It is a reason to ask harder questions about contract length and exit terms than you would when comparing genuinely independent vendors.

simPRO: Depth for Projects, Costing and Real Inventory

Credit where it is due. simPRO is the deeper platform of the two for contractors whose work runs beyond reactive callouts. Built in Brisbane and now used across the UK, its workflows target commercial operations running roughly five to ninety-nine field technicians in electrical, plumbing, HVAC, data networking, solar, fire protection and security.

Its strengths are estimating and multi-stage project management, progress claims and variations, purchasing and supplier workflows, asset registers, and live inventory across multiple stores and vans.

That last point matters. simPRO tracks perpetual stock levels in a way most rivals cannot match, including us. If you hold real inventory in a store and need to know what is on each van at any moment, simPRO is doing something genuinely harder than most of the market attempts.

The trade-offs are the ones that come with depth. Pricing is quote-based with no published rate card, so budgeting requires a sales conversation. Implementation takes real time and real internal effort. And a business doing fast domestic service work will pay for project machinery it never opens.

Best for: commercial contractors running installation and project work alongside service, with stock to control and margins to protect across long jobs.

BigChange: Job Management Wrapped Around a Fleet

BigChange approaches the same market from a different direction. Its origin is telematics, and that shapes the product. Hard-wired vehicle tracking, dashcams, driver behaviour monitoring and daily vehicle checks sit alongside CRM, scheduling, route optimisation, quoting, invoicing and a customer booking portal.

For the right operation, this is a strong fit. Drainage, waste, property maintenance and any business where the vehicle is an operational resource rather than transport gets real value from dispatch that accounts for live location and traffic, and from customer ETA links that cut inbound calls. BigChange also publishes its pricing, which is more than simPRO does.

The trade-offs sit in what the licence includes and how long you commit. Vehicle tracking hardware comes bundled with every mobile user licence whether the fleet matters to you or not.

The Plus tier adds a rugged device, cradle and installation, which suits some teams and duplicates existing kit for others. Contract terms are not published, and 2026 reviews from UK customers repeatedly mention multi-year minimums and difficulty exiting early. On certificates,

BigChange works through customisable forms and job cards rather than marketing native gas and F-Gas certification the way simPRO does, so check it against your own certificate list during the demo.

Best for: fleet-led UK operations that want telematics and job management in one system and are comfortable with hardware tied to the licence.

simPRO vs BigChange on the Decisions That Matter

Pricing and What the Licence Includes

BigChange publishes three tiers: Job Management at £79.95 per user per month, Job Management Plus at £99.95, and Job Management Unlimited at £124.95.

Vehicle tracking is included with mobile users, and the Plus tier bundles hardware. simPRO does not publish a rate card at all. Verdict: BigChange for transparency, though transparency about a higher number is still a higher number. Check current figures with both before you budget.

Contract Length and Exit Terms

Neither vendor publishes contract terms. UK reviewers report multi-year minimums with BigChange and cancellation demands for the remaining balance.

simPRO agreements vary by deal size. Verdict: no clear winner, and this is the single clause to negotiate hardest. Ask for the minimum term, the renewal mechanism and the notice period in writing before you see a demo.

Inventory and Stock Control

simPRO tracks live stock levels across stores and vans, with purchasing workflows built around it. BigChange handles parts against jobs without the same depth of perpetual inventory.

Verdict: simPRO, and comfortably. If a warehouse sits behind your service operation, this decides the comparison on its own. If your stock needs sit below that level, our guide to managing stock across multiple vans and a warehouse shows what usage-based tracking covers without perpetual counts.

UK Compliance and Certificates

UK trade work needs CP12 landlord gas safety records, EICRs and Minor Works certificates to BS 7671, F-Gas logs for refrigeration, and correct handling of the CIS domestic reverse charge. simPRO markets native certification workflows for gas and F-Gas work.

BigChange leans on customisable forms. Verdict: simPRO on paper, though the honest answer is to bring your five most-used certificates to both demos and ask to see the finished output.

Scheduling, Routing and the Mobile App

BigChange optimises routes using live vehicle position, traffic and skills, which is the natural payoff of the telematics foundation.

simPRO schedules well but does not treat the vehicle as a data source in the same way. Verdict: BigChange, if routing across a dispersed patch is a daily problem rather than an occasional one.

Implementation Time and Onboarding Cost

Both are enterprise implementations rather than sign-up-and-go products. Expect data migration, configuration, training and a period where productivity dips before it climbs.

simPRO's project and inventory setup typically takes longer because there is more to configure. Verdict: neither is quick, and any vendor promising otherwise is describing a pilot rather than a rollout.

Do You Need an Enterprise Platform at All?

Most UK firms searching this comparison have outgrown a lightweight tool and assume enterprise is the only step up. Often it is not, and the step costs four times as much.

These signals point to simPRO or BigChange:

• Multi-stage projects with progress claims, retentions and variations

• A physical store or warehouse where stock value needs controlling

• A vehicle fleet where tracking and driver compliance carry operational weight

• SLA-backed contracts across a large facilities portfolio

• An office team large enough to administer a configurable system

These signals point to something lighter:

• Reactive service and maintenance rather than project work

• Materials bought per job rather than held in stock

• Vans as transport rather than tracked assets

• Two to thirty field staff and no dedicated systems administrator

If your list sits mostly in the second group, you are looking at the wrong tier of the market. Our guide to job management software for UK tradesmen covers the platforms that fit, and our Joblogic alternatives comparison looks at the mid-market in more depth.

For the other heavyweight pairing, our simPRO vs Joblogic comparison covers that head-to-head, and simPRO vs Tradify shows how simPRO stacks up against a lighter rival.

Where iTrade Fits Between Them

We built iTrade for trade businesses that need the full toolkit without enterprise cost or enterprise setup. One app runs on iOS, Android, Mac and PC.

Scheduling and dispatch work from a single drag-and-drop calendar, engineers quote on site from saved price lists, the mobile app works offline and syncs when signal returns, and certificates capture with photo evidence. Invoices build from job data and sync to Xero, QuickBooks, Sage and FreeAgent, with UK VAT and the CIS reverse charge handled.

Pricing is £29 per field worker per month. Office admins and non-field managers use the system at no cost, and the 30-day trial does not ask for a card. Against BigChange's £79.95 entry tier, a team of eight engineers and four office staff is a materially different monthly number.

We are also clear about where we lose. iTrade does not hold live perpetual stock levels the way simPRO does, and our inventory control module sits on the Teams and Enterprise plans rather than the base plan.

We have no telematics hardware to match BigChange, and no fleet compliance tooling. A contractor running progress-claimed projects or a tracked fleet should buy the platform built for it.

For the large middle of the UK market, though, the honest answer is that both of these platforms are more system than the work requires. See the full feature set, the current plans, or how we line up against the alternatives.

Frequently Asked Questions

Is BigChange owned by simPRO?

Yes. Simpro Group acquired BigChange in October 2024, with former owner Great Hill Partners keeping a minority stake. Both products still sell separately in the UK under their own names, and since May 2026 both run on Simpro Group's Lightning AI platform alongside AroFlo and ClockShark.

Which is cheaper, simPRO or BigChange?

BigChange publishes tiers from £79.95 per user per month, rising to £124.95. simPRO is quote-based with no public rate card, so the honest comparison of simPRO vs BigChange on price requires quotes from both. Factor in implementation, training and contract length rather than comparing headline licence fees.

Does BigChange require vehicle tracking hardware?

Hard-wired vehicle tracking comes bundled with mobile user licences, and the Plus tier adds a rugged device, cradle and installation. That suits fleet-led operations. Businesses that already run telematics, or that do not need it, end up paying for capability they will not use.

Which handles UK gas and electrical certificates better?

simPRO markets native certification workflows covering gas and F-Gas work, while BigChange approaches certificates through customisable forms and job cards. Bring your five most-used certificates to both demos and ask to see the finished document rather than the forms builder.

How long does implementation take on either platform?

Both are enterprise rollouts rather than self-serve sign-ups. Expect data migration, configuration and training, with simPRO typically taking longer because project and inventory setup involves more decisions. Budget for a productivity dip before the gains arrive, and agree the split of work in writing.

What is a good alternative for a mid-size UK trade business?

Firms weighing simPRO vs BigChange often need neither. Without progress-claimed projects, a warehouse or a tracked fleet, a purpose-built platform like iTrade covers scheduling, quoting, certificates, materials and invoicing at £29 per field worker with office admins free.

Which One Fits the Work You Actually Do?

Choose simPRO if you run multi-stage projects and hold real stock. Choose BigChange if your fleet is an operational asset and routing decides your day.

Choose neither if your work is service and maintenance with materials bought per job, because both will cost more and take longer to bed in than the work justifies.

At iTrade, we would rather you reached the right answer than the flattering one. Work out what your admin hours are worth with our time-saving calculator, start a 30-day free trial with no card from our contact page, or email support@itrade.net and we will reply within one business day.