One File · Powerful productivity tracker
Every service.
Every fill-up.
A car maintenance log in one HTML file. Services, fill-ups, MOT/tax/insurance — for the household paying half a grand a year on petrol and £900 on services that nobody's tracking.
One payment · Yours forever · 14-day refund
- Works fully offline
- Installs as an app (PWA)
- No account, ever
- Yours, forever
Loads once, never needs the internet again. On a plane, in a basement, in a foreign hotel.
Every entry, every chart — stored locally. We never see it. We can't.
No subscription. No upgrades. No re-up next year. One file, yours.
Why log
Why a household keeps a service log.
MOT, tax, insurance, services — all dates, all forgotten, all surfaced one day too late.
Three renewal dates per car, all forgotten.
MOT, tax, insurance. The dashboard banner surfaces the next 30 days so they stop being a surprise.
Service intervals are real money.
Major service every 20,000 km. Brakes every 50,000. Without a log, you guess; with one, you book on time.
Cost per year is a proper number.
Fuel + services + insurance per year, year on year. The decision to keep or sell becomes a number, not a vibe.
Resale records pay for themselves.
Print the maintenance log. Buyers pay a premium for cars with paper trails. The file is the trail.
across 6 months, real costs
real cost-per-tank distribution
no recurring fee, ever
log a fill at the pump, no wifi
Inside the file
Eight things you'll use every day. Plus a dozen more.
One file. One dashboard. Every feature you'd expect from a "real" app — without the cloud, the cookies, or the £8/month.
Quick add
Log a fill-up from the home screen — three taps and back to your day.
Live insight banner
The single number that matters today, computed in real time from your entries.
Streak calendar
Daily streak across the last weeks. Showing up becomes the default.
Tier progression
Lifetime totals roll into satisfying tier badges as you log.
Services by type
Visual split across categories so the pattern becomes obvious without squinting.
Searchable, sortable list
Every entry findable in seconds — search across notes, sort by anything.
Free-form notes
A textarea per entry for the things that don't fit a field.
PNG share cards
One-tap share card of your stats, ready for Instagram or a group chat.
Offline, always
Loads once, runs forever without a network connection.
Installs as a PWA
Add to home screen — opens like any native app.
CSV in / CSV out
Bring your old data in. Take everything with you. No lock-in.
No account, ever
No email, no signup, no analytics, no third-party tracking.
Yours forever
If we vanish tomorrow, your tracker keeps working — local file, no server.
Light + dark
Auto-follows the system. Or pick one and stick with it.
Today
Today, at a glance.
The home screen pulls together what just happened and what's coming up — clean enough to actually look at every morning.
- Live insight banner — your unique angle, computed from your entries
- Four-tile stat grid surfacing the numbers that matter today
- Quick-add button — log without leaving the home screen
- Recent entries on the dashboard so the last log is one tap away
Fill-ups
Every fill-up, in one place.
Date, vehicle, odometer, litres per row. Sortable, searchable, groupable.
- Search across station / charger, notes
- Sorted by date (newest first)
- 8 fields per entry — the right amount of detail
Services
Every service, in one place.
Date, vehicle, type, garage per row. Sortable, searchable, groupable.
- Search across garage, notes
- Sorted by date (newest first)
- 9 fields per entry — the right amount of detail
Vehicles
Every vehicle, in one place.
Name, make, model, year per row. Sortable, searchable, groupable.
- Search across name, reg / plate, notes
- Sorted by name (A→Z)
- 11 fields per entry — the right amount of detail
How it's different
What you give up vs. car apps. Telematics surveillance.
Compared with subscription car-care apps.
- Pricing modelPay once · $8.99£8 – £15 / month, forever
- Account requiredNoYes
- MOT/tax/insurance remindersYesYes
- Multi-car / fleetYesOften paywalled
- Data stays on your deviceYesNo
- Telematics trackingNoYes
- Insurance partner upsellsNoYes
The promise
Your driving is yours.
Not an insurer's risk score.
Offline, always
Open it once, never need the internet again. The file holds the whole app.
Local-first storage
Every entry stored in your browser, on your device. No server sync. No leaks. Nothing to breach.
One payment, forever
No subscription, no upgrade tier, no nag. If we shut down OneFileClub tomorrow, your file keeps working.
Data does not sync automatically between phone and desktop
This is a local-first app — everything stays on the device you logged it on. To use it on both phone and desktop, use the built-in JSON or CSV export on one device and import on the other when you want to keep them in step.
Every view, light and dark.
A look at every screen across both themes — your tracker, populated.
Questions
Real answers, no fine print.
Does it support EVs?+
Yes. The kWh field on fill-ups is first-class; same dashboard, same reminders, no fuel-petrol-only assumptions.
Can I track multiple cars?+
Yes. Add as many as you need. The dashboard reminders aggregate across all of them.
Where is my data stored?+
Locally, in your browser, on your device. Nothing is sent to OneFileClub or anyone else — there is no account, no cloud sync, no analytics.
Does it work offline?+
Yes. Once your personalised copy loads the first time, the entire tracker runs from a single HTML file. Airplane mode is fine.
What does 'personalised copy' mean?+
When you buy, OneFileClub stamps a private copy with your licence and deploys it to a unique URL just for you. You bookmark it, install it as an app, or save the file — and the file is yours, even if OneFileClub disappears tomorrow.
What is your refund policy?+
14 days, no questions asked. Email us, we'll process it and disable your private URL.
One payment.
A logbook for the household.
We'll personalise a copy and email you a private link. Bookmark it, install it, log the next fill.
14-day refund · No subscription
