Inktend / App

The app

A closer look at Inktend

Every screen below is a real screenshot from the current build, not a mockup. Inktend isn't an inventory app; it's a care companion with a visual record: it knows your ink's chemistry, your pen's real capacity, and what you've actually been reaching for.

01 · Home

Currently Inked, not buried in a menu

Most pen apps open on an inventory. Inktend opens on your rotation: every pen that's actually filled right now, how many days it's been inked, and how much ink is left. Every ink carries its own chemistry, and that decides how long it may safely sit: iron gall gets 8 days, shimmer 12, pigment 14, dye 21. The home screen names what's urgent in plain language, not a generic countdown.

02 · Logging a fill

Ten seconds to log, a little memory built in

Pick a dry pen, pick an ink, done: for today, yesterday, or any date you actually inked it. If it's the first time that pairing has happened, Inktend says so. And before you commit to a risky combination (a staining ink in a demonstrator, iron gall in a vintage pen, shimmer in an EF nib), the flow warns you first.

03 · Pen collection

Pens are first-class, not a spec sheet

Every pen in the catalog resolves to a real product photo by matching brand and model: 131 of the 134 catalog pens carry one, and the rest fall back to a drawn illustration so the layout never breaks. Deliberately excluded: purchase price and serial numbers. This isn't an inventory ledger.

04 · A pen's own page

What's been through it, not just what's in it

Tap a pen and it opens to its own page: nib, capacity, and body at a glance, what's inked right now with its care countdown, and a full per-pen fill history: data that existed before but was invisible. Nib grade is chosen at add-time (six round grades plus Stub, Italic, Architect, Fude, Flex, Music and Zoom) and stays editable here, since it drives which pairing warnings apply.

05 · Ink library

A built-in catalog, organized the way collectors think

13792 inks across 713 brands come standard, searchable and filterable by color family, sorted blacks-first, then blues and navies, then the rest of the spectrum, the same order the community actually reasons about a shelf of ink.

06 · Real volume, real caution

A bottle that actually drains as you use it

Fills draw down the pen's real capacity (a TWSBI Eco takes 1.9 ml, a Sailor Pro Gear Slim 0.6 ml) from a bottle measured in millilitres, so an ink's page shows exactly how many fills are left, not a vague percentage. Photograph a paper swatch and Inktend calibrates against the paper under whatever light you shot it in, recovering the ink's true color and shading, verified to within ΔE 3–8 of ground truth.

07 · Color intelligence

A map of your collection, not just a list

Every ink you own, plotted by hue and saturation: angle is color, distance from center is how saturated it is. It surfaces gaps at a glance ("no oranges, yellows or violets in rotation") and flags near-duplicates by actual color distance, not just name, so you stop buying the same blue-black twice.

08 · Stats & sharing

A Year in Ink, and a card worth posting

Every fill of the year, rendered as a color ribbon in the order it happened, plus inks used, pens inked, ink drawn, and your most-reached-for bottle. When you want to share your rotation, Inktend renders a clean, on-brand poster through the system share sheet, built for r/fountainpens with no account or watermark required.

09 · Your data

Nothing here is locked in

Export every pen, every ink, every fill as a plain CSV through the share sheet. Open it in any spreadsheet. Coming from Fountain Pen Companion, a dedicated import reads FPC's own unmodified exports directly (collected inks, collected pens, currently inked, all three files at once) and fills in what FPC's export doesn't carry, like ink chemistry and real bottle capacity, from Inktend's own catalog.

10 · Light & dark

Whichever you pick, it remembers

Every screen in Inktend has a dark counterpart, not just an inverted filter. Your choice is saved and restored on the next launch, along with every pen, ink, fill, and notification setting, all stored on-device.

And the smaller things