BigChange vs ONAP SitePro: UK Field Service Software Compared 2026

BigChange is a well-known UK name in field service management, built as a broad all-in-one platform covering scheduling, mobile teams, customer management and operational reporting. ONAP SitePro takes a more focused approach, built around the day-to-day workflows of growing UK field service and facilities management businesses, with simpler setup and transparent pricing.

This comparison looks at platform approach, setup time, pricing and contract management, so you can see where each platform is genuinely stronger before deciding which one fits your business.

---

Quick Answer

BigChange suits larger field service operations that want a broad, configurable all-in-one platform and are prepared for package-based pricing and platform configuration during setup. ONAP SitePro suits growing UK field service and facilities management businesses that want fast, guided onboarding and clear monthly pricing from £99/month, without configuring a broader platform than they need.

---

Platform Approach

BigChange is built as a broad all-in-one field service management solution, covering scheduling, mobile teams, customer management and reporting in one configurable platform. ONAP SitePro is built as a focused field service operations platform: engineer scheduling, contract management, facilities workflows and invoicing, aimed specifically at the workflows a growing UK business runs day-to-day rather than a wide general-purpose toolset.

Setup and Implementation

BigChange's breadth means platform configuration is typically required before a team is fully up and running. ONAP SitePro is built for guided UK onboarding, with most teams scheduling jobs and dispatching engineers within days rather than weeks.

Pricing

BigChange uses package-based pricing, which can make the real monthly cost less predictable until a package is quoted for your specific team size and feature needs. ONAP SitePro publishes UK pricing in GBP: Starter from £99/month for up to 5 engineers, Growth at £249/month for up to 20 engineers, and Scale at £499/month for unlimited engineers, with no setup fee and no long-term contract.

Contract and Facilities Management

Both platforms include contract management, but ONAP SitePro treats it as a core workflow rather than an added-on feature, alongside facilities management built specifically for FM operations rather than general field service reporting. Asset tracking in SitePro is integrated directly into service history rather than managed as a separate module.

Engineer Scheduling and Digital Job Sheets

Both BigChange and ONAP SitePro include engineer scheduling, digital job sheets and a customer portal as standard. The difference is mainly in setup: SitePro's scheduling is ready to use with minimal configuration, while BigChange's broader platform typically needs more setup before scheduling runs smoothly.

---

Feature Comparison

Area	BigChange	ONAP SitePro
Platform approach	Broad all-in-one FSM platform	Focused field service operations platform
Implementation	Platform configuration required	Guided UK onboarding
Contract management	Available	Core workflow
Facilities management	General field service focus	Built for FM workflows
Asset management	Available	Integrated asset history
Pricing	Package-based pricing	From £99/month, tiered by team size
Contract commitment	Varies by package	No long-term contract

---

Which Should You Choose?

If your business wants a broad, configurable all-in-one platform and has the time to set it up properly, BigChange's depth can be genuinely useful. If your business wants to be scheduling jobs and managing contracts within days, at clear monthly pricing from £99/month, ONAP SitePro is built for that instead. More detail is available on the ONAP SitePro product page, including a full breakdown of plans on the pricing page.

---

Frequently Asked Questions

Is BigChange or ONAP SitePro better for a small UK field service business?

Small and growing UK field service businesses often find ONAP SitePro a faster fit, since it is built for quick setup and priced from £99/month, while BigChange's broader platform tends to suit larger operations with more complex configuration needs.

How long does it take to switch from BigChange to ONAP SitePro?

Most teams can be scheduling jobs and dispatching engineers within days of signing up, with onboarding support included to help migrate customer records and existing job history.

Is ONAP SitePro cheaper than BigChange?

BigChange uses package-based pricing that varies by team size and features, while ONAP SitePro publishes clear UK pricing from £99/month, generally making costs easier to predict upfront compared with a quoted package.

Does ONAP SitePro include contract management like BigChange?

Yes. Contract management is a core workflow in ONAP SitePro rather than an add-on, covering recurring maintenance contracts, renewals and service agreements alongside day-to-day job scheduling.

Can I migrate my data from BigChange to ONAP SitePro?

Most platforms, including ONAP SitePro, support importing customer and job history during onboarding. Confirm the exact export process from BigChange before committing to switch.

---

Conclusion

BigChange remains a capable choice for larger UK field service operations that want a broad, configurable all-in-one platform. ONAP SitePro is built for growing UK field service and facilities management businesses that want fast setup, core contract management, and clear monthly pricing without configuring a wider platform than they need. Compare both directly against your own team size and workflow before deciding, or explore ONAP SitePro to see if it fits.