Fountain pen · ink shelf

PenInk

Your ink shelf, logged with care — hue, flow, feathering, and paper pairings so you don’t buy the same blue twice.

What stays on the blotter

Small rituals for collectors who care how ink behaves on the page — not just how it looks in the bottle.

Inkwell shelf log

Track each bottle’s hue, wetness, and dry time so your desk drawer stays honest.

Paper pairings

Note which stock drinks the ink cleanly and which ones bloom into soft bleed.

Swatch compare

Lay two blues side by side before you reorder — catch near-twins before checkout.

Wishlist close-match

Flag bottles that look alike so wishlists stay lean and your next buy feels new.

Flow & bleed notes

Record how a nib lays down line and where feathering shows up on your usual paper.

Shelf at a glance

See which colors dominate your rack and which corners of the spectrum still feel empty.

Inside the log

Flip through ink detail, the shelf browser, hue compare, wishlist, pens, and paper pairings.

Ink detail with flow and bleed — Ink detail

Inkwell shelf with hue chips — Inkwell shelf

Swipe or use arrows — next card peeks in from the right.

Privacy & support

Plain language about what PenInk stores — and how to reach us if something needs a second look.

Privacy Policy

Effective date: August 2026

PenInk is a personal fountain-pen and ink log. The app does not collect personal data. Your ink notes, swatches, paper pairings, and wishlist entries stay on your device.

PenInk does not operate accounts, does not upload your shelf to a remote server for analytics, and does not sell or share personal information with third parties. Content you enter remains under your control on the device where you keep the log.

If you contact us for support, we use the details you send only to respond to that request. For questions about this policy, use the Support tab on this page.