We build the interactive tools you sell.

ROI calculators, assessments, configurators and benchmark comparators — built to your brief, branded as yours, delivered as a single file you own outright. We are invisible to your client.

Four worked examples

These are finished and working, not mockups. Use them, break them, check the maths.

Live comparison

IT Support Cost Calculator

Compares running IT support in-house against outsourcing it, and warns when the in-house figure is understated because one technician cannot cover everyone.

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Scored assessment

AI Readiness Assessment

Twelve questions across four dimensions, weighted and scored, with advice driven by whichever area comes out weakest.

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Configurator

Managed Service Configurator

Dependency and conflict logic between modules, and it tells you when a bundle would cost less than the parts you have selected.

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Benchmark comparator

Agency Benchmark Comparator

Positions a UK agency against published industry ranges, and states plainly where no benchmark exists rather than inventing one.

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How it works

Typical build£900–1,500
Turnaround3–5 working days
RevisionsOne round included
You receiveSource, yours outright
MeetingsNone

Why this costs £1,200 and not £4,000

Shimworks is one operator with heavy automation, building with AI under human review. That is the entire reason a build lands in three to five days at a fixed fee, rather than three weeks at a day rate. Every build is tested before it reaches you, and we will explain exactly how any tool works if you ask.

Everything is written, over email. We do not do discovery calls, and that is a deliberate part of the price rather than an apology. A written brief and a fixed fee agreed before anything starts.

Fixed price, never a day rate, and no billing for scope creep. If a build turns out to need more than was agreed, we will say so before doing it rather than after.

What we will not do

We will not build a tool that flatters the user. Every example above refuses to tell you what you want to hear — the calculator warns when its own in-house figure is understated, the configurator tells you a bundle would cost you less, and the comparator admits where no published benchmark exists.

That is not decoration. Your client's finance director spots a rigged model in about thirty seconds, and it is your name on it, not ours.

Getting started

Email hello@shimworks.co.uk with a sentence about the client and what the tool needs to do. We will come back with a fixed price and a date, or tell you honestly if an interactive tool is the wrong answer for them.

Shimworks builds interactive web tools for marketing agencies to resell under their own branding. UK based.