The practice of Freya Burrell · West Yorkshire

Planning tools, dashboards
& quiet apps.

Furrell is the independent practice of Freya Burrell — operational tools for teams that run on spreadsheets, and privacy-first apps for everything else.

Ideas from real operational problems. Builds directed end-to-end with AI. Tested in daily use before anything appears here.

100%authentic ideas
100%vibe-coded
1app on the App Store
dailyreal-world use

// bridging my brain to yours — the AI does the typing, I do the arguing

See the work How I got here
absence-tracker.xlsx
Column1Column14abs_dFLAG??
SMITH,J03/02/2641
khan_a4496220
Whitaker#VALUE!71
o'brien M19/03/2610

Same numbers. Same file. One of them you'd read. Invented data · about this

Book of Intentionslive on the App Store
Web apps & dashboardsin daily use by NHS ops teams
100k-row pipelinescleaned, matched and charted
Design-ledFine Arts-trained interface design
Selected work

Work in daily use

Each project began as a real operational problem. Every one includes a working demonstration on this page — all data shown is invented.

opening soon

Rooms

web app · in progress

Every building books its rooms the same way: a calendar that's wrong, a printed grid by the kettle, and somebody's memory.

Rooms does the obvious part properly — pick a site, a room, a time, and if it clashes it tells you while you're typing and offers the next free slot. But the part I'm actually pleased with is the numbers underneath: utilisation by room, load by hour, and how much capacity sat there bookable and nobody booked it. Most systems tell you what's taken. This one tells you what you're wasting.

Ask me about Rooms →
Rooms · todayinteractive demo · invented data
Green slots are free, grey are taken — select one to see clash handling.
free · live now

Bradford Factor calculator

free · runs entirely in your browser

The Bradford Factor is widely used and widely misunderstood — there wasn't a single explainer worth sending anyone to.

The Bradford Factor is spells × spells × days. The number is meaningless until someone tells you that 200 is a conversation and 500 is a process — so the calculator says that part too. Nothing you type is sent anywhere, stored, or remembered. No email box.

Open the full calculator →
Quick scoreinteractive demo
162
Medium — worth an informal chat3 × 3 × 18
in use

The trackers

Excel · Google Sheets · templates

Every team has the same file. Someone made it years ago, one column is called Column14, and nobody dares touch it because nobody knows what breaks.

So I built a good one. About 3,400 formulas doing the arithmetic underneath, so the person using it types dates into boxes and gets an answer. No pivot tables, no training day. It looks like something you'd put in front of a board — because that's usually where it ends up. They are in use by teams I have never met — which was the test.

Ask about the templates →
Absence rate by monthinvented data
JanFebMarAprMayJunJulAug
3.4%absence rate
11open spells
2scores over 200
in daily use

Ledger

web app

Ops teams run on three lists that never agree: projects on the go, ideas nobody's picked up, and the priorities leadership keeps asking about.

Ledger puts them in one place. Projects have an owner and a state; ideas wait in a pool until someone claims them; quarterly priorities get their own board with a presentation mode. It is in daily use — the only test of this sort of tool that counts.

Ledger · ideasinteractive demo · invented data
Nobody's picked this up

Sort out the shared drive

Nobody can find anything and there are four folders called "final".

In the pipeline
Locum booking & planningoffer spare sessions to the GP team, see what's already booked, end the email ping-pong — in design now
Built at work

The heavyweight builds

My biggest builds happen at the day job — planning tools an NHS ops team actually runs on. Those stay at work, on work systems, behind work logins. What's below are reconstructions with invented numbers: the ideas travel, the data never does.

in daily use

Same-day capacity planner

web app · multi-site

Every morning, six sites need to know one thing: can we see today's patients? This reads the plan, checks it against what's actually rostered, spots the gaps and the name mismatches, and turns findings into actions — before the phones open, not after.

Today · same-day coverinvented data
Practice 192% Practice 2104% Practice 378% Practice 496% Practice 561% Practice 699%

⚠ Rota check: Dr J. Example has a rota at Practice 3 but is booked on annual leave — please check.

in daily use

Demand & capacity dashboard

data pipeline · run charts

Hundreds of thousands of triage records, cleaned and fed into weekly run charts of demand against capacity, with an ideal line so a board can see the gap in one glance instead of forty tabs. Built so a colleague could open one sheet and just see it.

Weekly demand vs idealinvented data
5,120contacts this week
4,900weekly ideal
+4.5%vs ideal
5.4k 4.9k 4.4k ideal 4,900 5,120 w1w3w5w7w9

Demand has run above the ideal line for 3 of the last 4 weeks — the chart says so before anyone has to.

established

Workforce capacity planner

workforce model · ~50 staff, five pools

A whole nursing, HCA and phlebotomy team modelled: contracted hours minus breaks, admin, leave and training — against what clinics actually need. Its one big finding changed the conversation: enough hours, not enough trained hands for specific clinics. A hiring problem became a training plan.

Trained cover by clinicinvented data
2,120appts needed / month
1,764provided
356short — all in two clinics
Diabetes reviewson target
Asthma reviewson target
Vascular checks40 of 580 provided
COPD reviews150 of 180 provided

Plenty of staff hours overall — the gap is training, not headcount. That sentence saved a recruitment round.

Personal apps

Privacy-first personal apps

Built for personal health and reflection: no accounts, no streaks, no cloud. Data stays on the device, by design.

Book of Intentions

iOS · live on the App Store

An interactive journal with sealed letters you can't peek at, a gratitude jar you shake, and the real moon phase. Lives entirely on your device, and forgets nothing while telling no one.

Download on the App Store

247 gratitudes in the jar · shake to be handed one back

Pottable

iOS · in progress

An app for people with POTS, born of first-hand experience of the condition. Hydration and salt intake are represented by a pot plant called Basil, who wilts when levels drop — no score, no streak, just a plant to keep alive. It turns out to be exactly the right amount of pressure.

Basil · perked up — 6 glasses, salt ✓

Gut Log

in progress

Track what you ate, and how it went. Built for monitoring gastro symptoms, it uses AI to map triggers, symptoms and patterns — giving patients and their clinicians accurate data in place of scribbled notes.

pattern found: dairy → symptoms within 3h · 78% match · 4 wks of data

Story

How I got here

I studied Fine Arts. Then I ended up in operations, which is about as far from a life drawing class as you can get, and found myself staring at spreadsheets that were completely correct and totally unreadable.

That bothered me enough to start fixing them — first formulas, then scripts, then full applications built with AI assistance. I don't write the code by hand. I design the tool, direct the build, and test it against real operational use. The skill isn't the syntax; it's knowing what to build, seeing why something looks wrong, and refusing to stop before it works.

The art degree wasn't a detour. Most data is presented badly, and knowing why something looks wrong is a thing you can't pick up from a formula reference.

Furrell is an independent practice, not a company. Free tools, an App Store app, and a growing set of operational software — built in evenings, tested in daylight. If one of them saves you an afternoon, that's the whole idea.

Freya Burrell Freya Burrell · Furrell
The quick version
StudiedFine Arts
Works inNHS operations
ApproachDesigned first, built second
Builds withApps Script · web apps · AI-assisted
BasedWest Yorkshire
ShippedAn app on the App Store
About the data on this site

None of it is real, and none of it is yours

The demos

Everyone in them is invented

The names, spells and scores are made up to show what the formatting does. They're not real people and aren't based on real people.

The free tools

Nothing leaves your browser

The Bradford calculator runs entirely on your machine. Whatever you type is never sent to me, never stored, and gone when you close the tab.

The apps

Your data stays on your device

Book of Intentions keeps everything local — no account, no cloud, no analytics reading your journal. The same rule applies to everything I build for people's own lives.

Employer work

The ideas travel, the data never does

The tools in "Built at work" run on employer systems, behind employer logins, and remain there. Everything shown on this page is a reconstruction — invented sites, invented names, invented numbers. No employer data, systems or files are used anywhere on this site.

Work with Furrell

Describe the problem — most of the tools here started as someone's frustration.

Say hello