Mobile and tablet

Clusters works in a mobile browser and can be added to your home screen as a web app, where it opens without browser chrome. On touch devices the canvas gets pinch-zoom, long-press menus and hold-then-drag to select, Files open with a tap, a bottom navigation bar replaces the sidebar, and a focus view strips everything back to the board. Tablets with a stylus get pressure-sensitive drawing with palm rejection. There is no App Store or Play Store listing yet.

Updated November 9, 2026

Two ways to run it on a phone or tablet: the mobile browser, or the same app added to your home screen. They are the same app.

Touch on the canvas

While you hold empty canvas, a ring fills under your finger; once it is full, the press is a hold, and moving draws the box instead of panning. The menu opens when you let go, never under a box you were about to draw. A second finger at any point hands it to the pinch: no box, no menu, and the selection as it was.

Select… is for picking cards a box can't reach together: until you press Done in the bar that says "Tap cards to select", each tap adds a card or takes it out, and a hold-and-drag box adds to what is picked. Done keeps the selection; a tap on empty canvas drops it.

While you type in a note, the board glides to keep your line above the keyboard and the note's toolbar, and the page doesn't zoom in on an iPhone or iPad. The keyboard's autocorrect, automatic capitals and spellcheck work in notes, as in any text field.

With the draw tool active, one finger draws and two fingers still pinch-zoom. Starting a pinch part-way through a stroke discards that stroke rather than smearing it across the board as the canvas moves underneath — the failure that makes drawing on touch unusable.

Layout differences

Bottom navigation replaces the sidebar — Home, the current board, Messages, and more.

The top bar keeps what you reach for on the board: the cluster's name, Undo, Redo, who else is here, and Share.

A drawer, behind Open menu, holds the sidebar — Home, Messages, the cluster tree and every cluster's Files — with Search, Version history, Focus view and Help. ⤢ on its Files opens the full Files page. Tap a cluster to open it. Hold one to pick it up, then drag it onto another cluster to nest it there; hold and let go without moving for its menu — rename, colour, delete. A swipe that starts on a row just scrolls the list.

Files with a finger

In Files, both the full page and the sidebar's Files card, a finger works the way the iPad's Files app does:

While you are selecting, the selection bar acts on what is checked — put it on the board, move it, copy it to another cluster, delete it — and Done ends it. A hold opens the menu, so on a touch screen a file isn't dragged out of Files; putting it on the board or moving it from the bar or the menu does that instead.

Back — the phone's gesture or button — closes whatever is open on top, the drawer, a sheet or Settings, instead of leaving the app.

The add sheet, behind the + in the middle of the bottom bar, lays out everything you can add across the screen, sized for thumbs. The tool rail keeps its own +, whose menu opens beside the rail.

Focus view — touch only — strips everything back to the board itself, for reviewing on a phone without chrome in the way. Open it from the drawer, or from the top bar on a tablet held in landscape.

Tablets

Held upright, a tablet gets the phone's layout: the bottom bar, the drawer and the add sheet. On its side, most iPads are wide enough for the desktop layout, with a finger for a pointer. Either way it adds stylus drawing. On iPad, drawing, annotating and reviewing all work properly; long document editing is still better on a laptop.

Drawing is on the rail directly on touch, and in the add sheet, rather than behind the D shortcut there is no keyboard for. A stylus draws with pressure; flipping it over erases. The full-screen sketch pad goes edge to edge, with pinch-to-zoom inside the frame for detail work. Its chrome is two rows that never scroll — leaving and committing on one, the tools and Layers on the other — with the brushes, colours and sizes a tap behind the chip showing what you are drawing with, and the frame formats offered on the bar itself while the frame is still empty.

On a phone or a touch tablet, Home is your clusters on their own: the ones you were last in, every cluster at the top of your workspace, and New cluster. The 3D workspace graph is left for larger screens, and is never loaded here.

Installing

Add to Home Screen from the browser's share or menu button. It runs standalone, without browser chrome, and keeps its own sign-in — so sign in once from the home-screen icon itself.

Getting photos in from a phone

Two routes today:

1. Upload from the add sheet — the camera roll picker, which takes several photos at once.
2. Soleil Scout — text them, with no app at all. Note that Scout's phone line is not live yet.

Saving into a cluster from another app's share sheet is not available yet.

What is worse on a small screen

Honestly: dense surfaces. Long documents, screenplay writing, big grid layouts and the 3D graph are all usable and all better on a large screen.

What is genuinely good on mobile is capture and review — getting photos in, and looking at a board someone sent you.

Machine-readable: /docs/account/mobile.md · /llms.txt
What changed and when: /changelog