One File · Powerful productivity tracker
Every mint.
Every grade. Every set.
A coin collection log in one HTML file. Coins, grades, slabbed status, market values — with the unique trick: market vs. cost-basis appreciation 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 numismatists end up with cabinet books.
Centuries of coin tradition; centuries of cabinet records.
Sheldon grade is first-class.
From P-1 (Poor) to MS-70 (Perfect). The standard. Slabbed flag captures PCGS / NGC / ANACS / ICG / CGS.
Market vs. cost basis appreciates honestly.
Bullion swings; numismatic value rises with grading certifications. The dashboard surfaces the delta over time.
Set-completion tracking compounds.
50 State Quarters: 47/50. Walking Liberty halves: 12/65. The sets-in-progress data is the chase.
Stealth mode for serious cabinets.
Blur values until tap. Useful when showing the cabinet; useful for personal records.
across 5 metals and 4 graders
with real PCGS / NGC grades
no recurring fee, ever
the cabinet, on your own device
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
Add a coin 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 metal
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.
Photo per entry
Optional photo field stored locally as base64 — never uploaded.
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
Cabinet
Every coin, in one place.
Country, denomination, year, grade (sheldon) per row. Sortable, searchable, groupable.
- Search across country, denomination, set / collection
- Sorted by year (newest first)
- Group by country with one tap
- 17 fields per entry — the right amount of detail
Gallery
The whole jungle.
Every plant photo, in one grid. Tap any to see it full size.
- 17 fields per entry
How it's different
What you give up vs. coin apps. Auto-pulling Heritage prices.
Compared with coin collection apps.
- Pricing modelPay once · $9.99£8 – £15 / month, forever
- Account requiredNoYes
- Auto-pull market pricesNoYes
- Sheldon grade fieldYesYes
- Set-completion trackingYesLimited
- Data stays on your deviceYesNo
- Marketplace feesNoYes
The promise
Your cabinet is yours.
Not a marketplace's lead-gen.
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 pull Heritage / Spink prices?+
No — that needs API access. Update market values quarterly; the trade-off is total privacy at zero recurring cost.
Will it work for ancient coins?+
Yes. Year field accepts negatives (BC). Roman / Greek / Byzantine / hammered all fit. Notes textarea preserves provenance.
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 cabinet that compounds.
We'll personalise a copy and email you a private link. Bookmark it, install it as an app, take it to the next coin show.
14-day refund · No subscription
