Web app · Lifestyle
Inkwell
Know exactly what’s inked and which nib is due a flush
A pen catalogue with nib grade and filling system, an ink library you browse as a colour-swatch grid, and pairings that count the days since the fill so ink never dries in a feed. Free in the browser, no account, no install.
Stored in your browser only. Nothing you do in the web version is sent to our servers. Clear your browser data and it's gone — so export a backup from the in-app menu if you want to keep it.
In your browser
What you can do in Inkwell on the web
Pen catalogue
Brand, model, nib grade (EF through Fude), filling system — cartridge, converter, piston, vacuum, eyedropper, button, lever, crescent, snorkel — body colour and notes, grouped by brand and searchable.
Ink library as a colour grid
Every bottle and sample with its real swatch hex, shown as a scrollable palette with a live writing preview when you pick the colour, or as a plain list.
Pairings with a cleaning clock
Pair a pen with an ink, set the flush window in days, and a progress ring counts the days since the fill — amber the moment it is overdue.
Ink a pen that’s already loaded
Filling an inked pen files the previous fill as cleaned first, so the history stays honest without any bookkeeping.
Full history per pen and per ink
Every ink a pen has ever run, every pen an ink has been in, with fill and clean dates and how many days it sat.
Export the collection
Pull every pairing out as a CSV, or take a full JSON backup of pens, inks and fills.
Screens
Every screen, rebuilt for the browser
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1
Inked
How many pens are inked, which are past their flush window, and a card per pairing with a cleaning bar.
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2
Pen case
Every pen grouped by brand with its nib grade, filling system and what is loaded right now.
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3
Pen detail
Body colour, nib, filling system, the current fill with its cleaning bar, and every ink this pen has run.
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4
Add or edit a pen
Brand, model, nib grade, filling system, body colour and notes.
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5
Ink library
The whole collection as a colour-swatch grid or a list, searchable by brand and name.
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Ink detail
A full-bleed swatch, bottle or sample, and every pen that has run it.
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Add or edit an ink
Brand, name, swatch colour with a writing preview and a fountain-pen palette, bottle or sample, notes.
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Ink a pen
Pick a pen and an ink, set the fill date and the flush window.
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Pairing
The cleaning ring, days left before a flush, full details and Mark cleaned.
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Pairing history
Every fill month by month, with average days from fill to flush and your most-used ink.
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Settings
Default flush window, library view, CSV export, backup, sample data and erase.
Try it with sample data: Loads nine pens (Lamy 2000, Pelikan M400, TWSBI Eco, Noodler’s Ahab and more), ten inks with real swatch colours, nine current fills — one already past its flush window — and eight cleaned pairings going back four months. You can start fresh at any time.
Ready? It's free.
Sign in once and every All Things AI web app opens instantly. No install, no subscription, no data leaving your browser.
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Questions
Is the web version of Inkwell free?+
Yes. Sign in with a free All Things AI account and use every screen — no subscription, no in-app purchases.
Where is my data stored?+
Only in this browser's local storage. Nothing you enter is sent to our servers, so we can't see it, back it up, or restore it. Clearing site data, a private window, or another device starts empty. Export a backup from the in-app menu to keep it.
Do I need an account?+
You can read about the app without one, but you must sign in to open it. Sign-in is free and takes a few seconds with Google.
How is the web version different from the Inkwell iPhone app?+
Swatches are the hex colour you pick rather than a photographed ink sample, so match them to how the ink dries on your own paper. No reminders — the browser version shows what is overdue when you open it rather than notifying you. Everything is saved in this browser only, so a different device or a cleared cache starts empty; use the JSON backup to move a collection across.