One File · Powerful money tracker
Every holding.
Every dividend. Every rebalance.
An investment portfolio tracker in one HTML file. Holdings, trades, rebalance drift — for the long-term investor who doesn't want a brokerage's app to sit between them and their numbers.
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 long-term investors keep their own books.
Brokerages come and go. Your records shouldn't.
Rebalance with intent.
Set target weights per holding; the dashboard surfaces drift. Re-balance because the data says so, not because the calendar does.
True cost basis survives platform moves.
Move broker — your cost basis follows. The file is the source of truth, not whichever app you happen to be using.
Multi-broker, multi-currency, one file.
ISA + SIPP + GIA + crypto + workplace pension. Aggregated, total weight set per holding.
Survives the next platform shutdown.
Brokerages get sold, restructured, sunset. Your records keep working.
real ETFs, stocks, crypto
across 2 years
no recurring fee, ever
no broker integration; total privacy
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 trade 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.
Tier progression
Lifetime totals roll into satisfying tier badges as you log.
By asset class
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.
Cross-entity links
Reference one entity from another — relationships stay intact across edits.
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
Portfolio
Every holding, in one place.
Ticker / symbol, name, units / shares held, current price / unit per row. Sortable, searchable, groupable.
- Search across ticker / symbol, name, broker / platform
- Sorted by ticker / symbol (A→Z)
- Group by type with one tap
- 11 fields per entry — the right amount of detail
Trade log
Every trade, in one place.
Date, holding, type, units per row. Sortable, searchable, groupable.
- Search across notes
- Sorted by date (newest first)
- Group by type with one tap
- 8 fields per entry — the right amount of detail
How it's different
What you give up vs. cloud trackers. Auto-pulling prices.
Compared with subscription portfolio platforms.
- Pricing modelPay once · $9.99£8 – £15 / month, forever
- Account requiredNoYes
- Brokerage integrationNoYes
- Rebalance drift surfacedYesOften paywalled
- Multi-broker / multi-currencyYesYes
- Data stays on your deviceYesNo
- Survives platform shutdownYesNo
The promise
Your portfolio is yours.
Not a fintech's training data.
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 auto-pull prices?+
No — that needs API access and subscription. Update prices monthly; the trade-off is total privacy and the file works forever, with or without us.
Multiple currencies supported?+
Yes — quote currency per holding (GBP / USD / EUR). Aggregate values use your platform's manual entry; no FX surprises.
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 book that compounds.
We'll personalise a copy and email you a private link. Bookmark it, install it as an app, log this morning's trade.
14-day refund · No subscription
