June intake · slots open WLV · UK · EST. 2019
Builds shipped 40+
SMEs served 16
Years building 7+

Operational
software,
engineered for
how you actually work.

We build bespoke tools and AI automation for UK small & medium businesses — the job management systems, booking platforms, and internal apps that replace the spreadsheets, clipboards and sticky notes your business currently runs on.

£995Audit · fixed fee
£2.5k–20k+Build · scope-based
£900+ /moRetainer · monthly
Book Digital Audit Fixed fee · 2-week turnaround
02 · What we build

Three kinds of
work. No agency fluff.

Every engagement starts with the Audit — that's how we make sure we're solving the right problem before a line of code gets written.

Start here01

Digital Audit &
AI Opportunity Review

Two weeks. We map how your business actually runs, find the 3–5 operational bottlenecks costing you the most, and give you a ranked plan.

£995 · fixed fee
Build02

Bespoke software
& websites

Job management, booking, client portals, stock, e-commerce, internal tools. Built to your workflow — not a template bent around it.

£1,500 — £6,000+
Run03

Monthly support
& evolution

Software is never finished. We stay on hand for fixes, iterations, new features, and AI workflows that grow with you.

£900 – £1,800 / month
03 · The Audit

A fixed fee
to find out if software
will actually help.

Fixed fee
£995+ VAT

50% credited back on any follow-on build. No retainer lock-in.

01

Operational mapping

Two 90-min calls with you and up to three of your team. We walk every process end-to-end — quoting, scheduling, delivery, billing.

Day 1–4
02

Bottleneck & tool inventory

Where hours are lost. Which tools you already pay for. Which integrations are held together with CSV exports.

Day 5–7
03

AI opportunity review

Honest assessment of where AI genuinely helps — and where it's being oversold. No hype, no invented use cases.

Day 7–9
04

Prioritised roadmap

A written, ranked plan — quick wins, 3-month builds, 12-month ambitions. Each item costed in hours reclaimed and £ saved.

Day 10–12
05

Build-or-buy recommendations

For each opportunity: bespoke build, off-the-shelf tool, or leave alone. We'll say when SaaS is the right answer — even though it's not what we sell.

Day 13–14
04 · How we work

Four phases.
No surprises, no scope creep.

Every project — whether a £2k website or a £40k platform — moves through the same four phases. You'll always know where we are.

01.Wk 1–2

Audit

Map the operation. Find the real problem — which is rarely the one you were told.

02.Wk 3

Design & fix-price

Wireframes, technical spec, fixed quote. You sign off before a line of code is written.

03.Wk 4–10

Build

Weekly demos. Real staging environments. Your team tests with real data from day one.

04.Ongoing

Operate

Handover, training, optional monthly retainer. We stay as long as you need, no longer.

05 · Sectors we serve

Different trades,
same operational mess.

We specialise in the sectors SaaS forgot — too small for enterprise, too specific for templates, too operationally complex for a Notion doc.

6 builds
Trades & field services

Joiners, electricians, roofers, plumbers. Quoting, scheduling, certs.

4 builds
Salons & clinics

Bookings, client records, treatment plans, stock, recalls.

3 builds
Manufacturing

Small-batch producers. WIP tracking, BOM, dispatch, quality logs.

3 builds
E-commerce

Shopify/Woo with proper operational backends — not just a storefront.

2 builds
Health & wellness

Private clinics, therapists, physios. GDPR-first patient workflows.

2 builds
Property & lettings

Landlords, letting agents, property managers. Tenancy workflows, maintenance scheduling, contractor coordination.

06 · Selected work

Real builds,
businesses that
stopped running on workarounds.

E-commerce · physical + digital

Bespoke e-commerce platform replacing WooCommerce — handling physical prints and secure digital file delivery in one system.

100%
Automated digital delivery
1
Admin system for everything
View live site
Laser hair removal · skin clinic

Booking, client records, course tracking and automated recall — replacing a paper diary and three disconnected apps.

+28%
Rebook rate
5 hrs
Saved on admin /wk
View showcase
Letting agent · 120 properties

Tenancy management, maintenance scheduling and contractor coordination — replacing a spreadsheet and a WhatsApp group.

−60%
Missed maintenance SLAs
1
Dashboard for all properties
View showcase
07 · Pricing

Transparent,
fixed-fee where possible.

We quote flat fees once the spec is signed off. No day rates hidden in a retainer. No "it depends."

01 · StartEntry point

Digital Audit & AI Review

£995fixed

The only way in. Two weeks from brief to roadmap.

  • Operational mapping
  • AI opportunity review
  • Prioritised roadmap
  • Fixed quote for next steps
  • 50% credited back on build
02 · Build

Bespoke website or software

£2.5k– £20k+

Scope-dependent. Websites from £2.5k, operational tools from £8k, full platforms from £20k.

  • Wireframes & fixed quote
  • Weekly demos
  • Staging environment
  • Training & documentation
  • 30-day post-launch support
03 · Run

Monthly support & evolution

£900– £1,800 /mo

Optional retainer. Hosting, monitoring, fixes, and a pool of dev hours.

  • Priority support SLA
  • Monthly improvement sprint
  • AI workflow evolution
  • Quarterly ops review
  • Cancel any month
08 · Questions we get a lot

The honest
answers.

01Why does the Audit cost money? Other consultants do it free.+
Because free discovery calls are sales pitches. The £995 pays for two weeks of real work — mapping your operation, finding the bottlenecks, and producing a ranked plan. We're accountable for the quality of the output, not for closing you on a build. If you decide not to work with us further, you keep the roadmap.
02We already have Xero / Shopify / Jobber. Can you work around those?+
Yes — and we'll tell you when to keep them. We integrate with the tools you already pay for. The goal is rarely "rip and replace"; it's usually "stitch together so your team stops copy-pasting between systems."
03Is "AI" just a marketing sticker?+
Sometimes, yes. That's why the Audit includes a no-hype AI review. We'll show you where LLMs actually save time — document parsing, triage, summarisation, classification — and where they're a distraction. If AI isn't the answer for you, we'll say so.
04How long does a typical build take?+
Small websites: 2–4 weeks. Operational tools: 6–12 weeks. Larger platforms: 3–6 months. We quote a fixed fee and a fixed end date — if we overrun, that's on us.
05Do we own the code?+
Yes. Full source code, documentation, and infrastructure are handed over on completion. No vendor lock-in. You can hire any other developer to maintain it.
06We're not sure we need software. We just need things to be tidier.+
Then the Audit is still the right call. Sometimes the answer is a better Google Sheets setup, a £20/mo SaaS tool, or changing one step in how you handle invoices. We'll tell you that — it's a better outcome for you than a £30k build you didn't need.
09 · Who we are

We built onSync because UK small businesses kept hitting the same wall: growing faster than their systems.

The tools that hold an operation together — job management, booking, stock, client records, billing — end up scattered across spreadsheets, WhatsApp groups and software that almost fits.

We fix that. Bespoke operational software, scoped to how your business actually works. Not a template. Not a SaaS subscription for features you won't use. A system built around your workflow — and a team that stays until it runs properly.

The work is unglamorous. The results aren't.

— Paul Marin Founder · onSync
10 · Start here

Start with
the Audit.

Two weeks, £995 fixed, no obligation. At the end you'll have a plan — and a much clearer picture of whether we're the right team to build it. Or not. Either's fine.