One File · Powerful productivity tracker
Every pen.
Every ink. Every paper.
A fountain pen & ink log in one HTML file. Pens, inks, rotations — with the inked-banner that surfaces every pen currently filled and what with.
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 FP enthusiasts end up with rotation books.
Pen × ink × paper compounds; without records the canon evaporates.
Inked banner is the live rotation.
Every pen currently inked, with what — surfaces immediately. Useful when the rotation is 6 pens deep and you can't remember which one has the Iroshizuku.
Best-combos top list builds the canon.
After 30 rotations the list ranks pen × ink × paper combinations by combo rating. The pairs that just work.
Behaviour chips per ink record what matters.
Shading / sheen / shimmer / wet / dry / fast-dry / waterproof / feather-prone. The vocabulary FP enthusiasts use; the data follows.
Inks-in-collection tier card is satisfying.
100 inks is collector territory. 250 is hoarder. The tier card runs without judgement.
Pilot · Sailor · Lamy · TWSBI · Pelikan
Iroshizuku · Diamine · Sailor · more
no recurring fee, ever
log at the writing desk, paper alongside
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 rotation 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.
Inks by category
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
Pens
Every pen, in one place.
Brand, model, nib, nib material per row. Sortable, searchable, groupable.
- Search across brand, model, currently inked with
- Sorted by brand (A→Z)
- Group by brand with one tap
- 11 fields per entry — the right amount of detail
Inks
Every ink, in one place.
Brand, name, category, rating per row. Sortable, searchable, groupable.
- Search across brand, name, notes
- Sorted by name (A→Z)
- Group by category with one tap
- 8 fields per entry — the right amount of detail
Rotations
Every rotation, in one place.
Inked on, pen, ink, combo rating per row. Sortable, searchable, groupable.
- Search across paper used most, notes
- Sorted by inked on (newest first)
- 7 fields per entry — the right amount of detail
How it's different
What you give up vs. forum tracking. A public swatch.
Compared with forum-based collection tracking.
- Pricing modelPay once · $8.99£8 – £15 / month, forever
- Account requiredNoYes
- Public ink swatch sharingNoYes
- Inked-now bannerYesNo
- Pen × ink × paper combo ratingYesManual
- Data stays on your deviceYesYes
- Behaviour chip taxonomyYesNo
The promise
Your nib book is yours.
Not a forum's content.
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 scan ink swatches?+
No — that needs colour-matching ML. The colour field is a manual swatch; close enough for 99% of decisions.
Can I track flush / cleaning intervals?+
Yes. Each rotation has an inkedOn + flushedOn date. Cleaning history per pen is preserved.
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 pen book.
We'll personalise a copy and email you a private link. Bookmark it, install it as an app, log the next fill.
14-day refund · No subscription
