The notebook

Open the cover.
You're already on a page.

This is what gemnotes looks like on the tablet itself. No home screen, no grid of apps, no status bar. The resting state of the device is a blank page — everything else has to earn its way back in.

Top-down view of an e-ink tablet showing the gemnotes pages list
Concept device render, real screenshot. The UI is running; the aluminium body is not manufactured.

A page, and only a page

There is no launcher to get past and no notebook to choose. The device wakes into the page you were on, with a faint rule and a wide left margin to hold it by.

Two indicators, bottom corners: the date, and the page number. No battery, no wifi, no clock — each of those is a reason to look up from what you were writing.

A gemnotes page with handwritten notes and a small sketched diagram, faint ruling and a wide left margin
Writing surface

Five tools, and they hide

Pen, eraser, shapes, find, pages. Swipe in from the left edge to bring the bar out; let go and it's gone. There's no permanent button to summon it — that's a feature that was cut, not one that was forgotten.

A toolbar that is always visible is a toolbar you are always slightly aware of.

The gemnotes tool bar swiped in from the left edge, showing five tool icons on a dark strip
Tools · swipe in, let go, gone

Pages, not folders

A timeline. Today, yesterday, the 22nd. That's the whole organising model on the device.

This is deliberate, and it comes from a complaint we kept reading in the same words: every note arrives with a question attached — which notebook does this belong in — and that question is the expensive one. So it isn't asked. Sorting happens later, on a computer, where you can see everything at once.

Pages list on the device: today, yesterday and older entries with page counts and times
Pages · a timeline, not a folder tree

Search that takes handwriting

Write what you're looking for. Results come back as your own ink, with the matched words picked out — because it searched inside the strokes, not inside filenames.

The search box does not open a virtual keyboard, and that's not a stylistic choice. Light Phone II shipped e-ink and typing latency became their top complaint; their third device dropped e-ink entirely. On a page this slow to refresh, typing is the failure mode.

On the device: find the words. On the desktop: ask the question.

Handwriting search on the device with a handwritten query and four handwritten results
Find · searched in the ink, not in filenames
What it records

Raw strokes, and the order you drew them.

The tablet's whole job. Every stroke keeps its coordinates, its pressure and its timestamp, and gets written to an open format called .ink.

5 MS

Ink latency on a Boox Go 10.3

Measured 31 Aug 2026 on a Go 10.3 Lumi, using Onyx's raw pen path. The browser-based version of the same surface sits at about 30 ms.

X · Y · P · T

The timestamp is the valuable one

You draw the box first, then the arrow leaving it. That order is the parent–child signal a diagram builder needs, and it's destroyed the moment a page is flattened into an image.

TAP THE MARGIN

Mark a line without writing on it

A tap in the left margin flags the line beside it instead of leaving a stroke. It is the thing people already do to paper with a pen — and it's where the logo comes from.