Volatility, Pocket-Sized.

Why did your energy bill go up last month?

CaveManWF traces the chain from world events to your home bills — in plain English, every day, for £6.99/month.

When oil moves in the Middle East, your grocery bill feels it eventually. We show you the path — traced, sourced, and dated. So the bill stops being the first warning you get.

Reserve Early Access

The engine runs on a live daily cycle. The Chain Maps below are real outputs from it. Subscriber access opens soon — reserve your place to be first in.

Woman counting cash at wooden desk with calculator and financial documents spread out

A real Chain Map output from the engine — every figure sourced and dated.

The honest question

Why does nobody else do this?

Free money apps are free because someone pays them for the referral — the switch, the card, the deal. So they always end by telling you what to do, because that is how they get paid.

We have nothing to refer. No panel, no partner, no commission.

Which is exactly why we can answer the one question nobody else is paid to answer: not what to do about your bill, but why it moved.

Here is a real Chain Map. Brent Crude → the price at your pump.

This is a genuine output from the engine. Every figure is real, sourced, and dated. Nothing here is invented.

The World Price

Brent Crude oil — the global benchmark. Traded on international markets, priced in US dollars per barrel.

The Path

Crude is refined into petrol and diesel. The pump price you pay is made of three parts: the fuel itself, fuel duty, and VAT on top.

Crude oil Refinery Forecourt
What You Actually Pay — week of 3 August 2026
Petrol at the pump 159.89 p per litre
Diesel at the pump 179.19 p per litre
Of which — fuel duty 52.95 p per litre
Of which — VAT 20%
The part that actually moves with oil (petrol) 80.29 p per litre
The part that actually moves with oil (diesel) 96.38 p per litre

Source: DESNZ Weekly Road Fuel Prices. Public sector information licensed under the Open Government Licence v3.0.

What this is telling you

Most of what you pay at the pump is not the oil. Petrol costs about 160p a litre — but only around 80p of that actually moves when the oil price moves. The rest is tax: 52.95p in fuel duty, plus VAT on the whole lot.

Here is why that matters. UK fuel duty rises on 1 September 2026. When it does, the pump price will go up — but the part that tracks the oil market will not have moved at all. Anyone looking only at the headline price would think the market did it. The engine shows you, in pence, that it was the tax.

That is the whole idea. You see exactly what moved, and why. No prediction. No advice. You decide what to do with it.

Reserve Early Access

Built on Ofgem, ONS, DESNZ and Bank of England data — plus international energy and shipping feeds.

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Be first in when subscriber access opens. Founding members lock in £6.99 and get everything, every day.

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What is happening to your bills right now?

These are the chains the engine traces. Every one is built the same way — sourced, dated, and in plain English.

🛢️

Oil

Brent Crude

🌾

Wheat

Grain prices

⚡

Natural Gas

Energy bills

☕

Coffee

Daily brew

🚢

Shipping

Hormuz strait

Everything in your subscription

A map shows you the route. But on any real journey there are places to stop, to ask what a sign means, to check you are still going the right way. That is what we are building — so you do not just see the answer, you understand it.

Daily Chain Map

Live

World event → your home bills, traced step by step, delivered every morning.

Daily Decoder

Live

The deeper story behind each Chain Map — geopolitical context, what to watch, what could change the outcome.

500+ term Glossary

Coming with your subscription

Every confusing financial word explained in plain English. Quantitative easing. Yield curve. Strait of Hormuz. All of them.

Education Modules

Coming with your subscription

5–10 minute lessons on how oil markets work, what inflation really means, and how supply chains affect your shop — no jargon.

Understanding Quizzes

Coming with your subscription

After each module, a quick quiz checks that your knowledge is real — because a lot of what looks like a knowledge gap is really a confidence gap, and the checks are built to close exactly that.

Available in multiple languages

🇬🇧 English — live now
🇪🇸 Spanish — SOON
🇨🇳 Mandarin — SOON
🇸🇦 Arabic — SOON
🌍 Kiswahili — SOON

Our users are already global — with no marketing spend anywhere. The demand is worldwide. The language barrier is what we are removing.

Start free. Reserve your place.

Full self-serve access is not open yet. Reserve now and founding subscribers get everything, every day, the moment access opens.

Free

£0 / month

One Chain Map per week, delivered to your inbox. No card needed. See exactly what you receive before you pay a penny.

  • 1 Chain Map per week
  • Access to the glossary
  • No credit card required
Reserve Free Access
Most popular

Signal

£6.99/month

Reserve your place now. Founding subscribers get everything, every day, the moment access opens — locked at £6.99.

  • Daily Chain Maps
  • Daily Decoders
  • Full 500+ term Glossary (forthcoming)
  • Education modules (forthcoming)
  • Understanding quizzes (forthcoming)
  • Multiple languages as released (forthcoming)
  • Cancel any time
Reserve Your Place — £6.99/month

Reserves founding early access — not instant full use. No contracts. Cancel any time.

Questions? Email info@cavemanwf.com

Why people trust CaveManWF

Named sources only

Every output traces back to a named source: Ofgem, the Office for National Statistics, DESNZ, the Bank of England, and international energy and shipping data. Nothing is invented. No AI writes the numbers — every figure is produced by fixed rules and carries its own source and date.

Built to inform, never to advise

The engine sits outside the financial-advice line by design — it shows you what is happening and lets you decide for yourself. Information, not instructions.

Mudrik Ahmed, Founder & CEO of CaveManWF

Built by a physicist

Mudrik Ahmed — Founder & CEO

MSc Space Exploration Systems. BSc Physics. Previously at the UK's Defence Science and Technology Laboratory and Leonardo UK. The same discipline that maps spacecraft trajectories now maps commodity shocks to your wallet.

Independently validated

UK Startup Awards 2026 Regional Finalist. HMRC SEIS Advance Assured. Selected for CLIMB26 by the North East Combined Authority. Recognised by Peachscore Plus.

Why I built this

I built this because I could not find it. I wanted somewhere I could look and simply see what was happening in the economy I live in — without a Bloomberg terminal, without being sold a prediction, without the jargon that keeps ordinary people out.

It did not exist. So I am building it.

— Mudrik