The best infinite canvas note apps, honestly sorted

Every app on this page starts from the same conviction: your notes deserve room. Instead of a page or a list, you get an unbounded plane — cards laid out in space, lines you draw between ideas. Where the apps part ways is everything around that canvas: what it costs, where the notes actually live, what happens when you stop paying, and whether anything besides the app itself can read your thinking.

One disclosure before any sorting: Acres, the last entry, is our app — this site belongs to it. The other five are covered the way we’d want someone to cover us, and each section links to a longer comparison that cites its sources.

Short picks, before the detail: Heptabase if you want the most complete product and don’t mind renting it. Obsidian if the canvas is a supplement to a deep Markdown knowledge base. Freeform if you’re on Apple hardware and the board is a sketch, not a record. Milanote for creative projects you show clients. Scrintal if it has to run in a browser. Acres if the canvas is the whole point and you want the result to be files on your own disk.

What is an infinite canvas note app?

An infinite canvas note app is a note-taking tool whose primary surface is an unbounded two-dimensional canvas: notes are cards you position in space, and the arrangement itself carries meaning — this cluster is one argument, that trail is a timeline, the card sitting alone is the question you haven’t answered. The genre sits between two neighbors it’s often confused with. Whiteboard tools (Miro, FigJam, Excalidraw) share the canvas but not the notes — their objects are shapes and stickies for a session, not documents you’ll search in two years. Traditional note apps have the durability but not the space. The six below try to do both.

Heptabase: the strongest product, on subscription

If you removed price and ownership from the question, Heptabase would win this page. It runs everywhere — macOS, Windows, Linux, iOS, Android, web — with real mobile apps, real-time collaboration, PDF OCR that parses equations, transcription for video and audio, and the most mature AI in the category: an agent mode that creates and edits cards with diff review. It’s a proven product from a profitable company that ships near-weekly.

The costs are equally plain. There is no free plan — Pro is $11.99 a month, $8.99 billed yearly, and the AI-credit tiers run to $71.99 a month. Your cards live in Heptabase’s cloud in its own format (with Markdown export and a full JSON backup). And if you stop paying, your notes go permanently read-only. Acres has a read-only mode too, after its trial; the disagreement is what sits underneath it — a subscription that can lapse against one purchase, and a cloud format against plain files any app can still edit. The full picture, including where its agent and mobile story beat ours: Acres vs Heptabase.

Obsidian Canvas: the free giant’s side feature

Obsidian is the deepest free knowledge base you can run on your own files — Markdown in a local vault, free even for commercial use, with 6,762 community plugins and an optional end-to-end encrypted sync at $4 a month billed annually. Canvas is one of its core plugins: a solid infinite canvas where text cards and vault notes sit side by side, saved in JSON Canvas, an open format Obsidian published under MIT.

But Canvas is a feature, not the center of gravity. Text typed on a canvas lives inside the .canvas file rather than as a note of its own, and the canvas doesn’t drive the app — the vault does. If you already think in Obsidian and want an occasional board, that’s exactly right. If you’d spend most of your day on the canvas itself, you’ll feel the seams; that difference is what Acres vs Obsidian Canvas works through.

Apple Freeform: the whiteboard you already have

Freeform is free, preinstalled on every Mac, iPad, and iPhone since late 2022, and pleasant in a way bundled software rarely is — especially with an Apple Pencil. Real-time collaboration over iCloud handles up to 100 people. For sketching, moodboards, and planning sessions, it’s hard to argue with software that’s already on your machine. (Since January 2026 Apple also sells Creator Studio, a $12.99/month bundle that adds premium templates, stock assets, and AI features on top; the base app stays free.)

As a note system, it’s a dead end by design: no Markdown, no tags, no links between boards, no API, and the only way a board leaves Freeform is as a PDF or a screenshot. Boards aren’t files you hold — they’re records in iCloud. Sketch in it freely; just don’t let years of thinking accumulate there. The longer version: Acres vs Apple Freeform.

Milanote: boards for client work

Milanote is what happens when the infinite canvas grows up inside creative agencies: moodboards, briefs, and storyboards with the most polished templates in the category, real-time collaboration with comment permissions, and boards that travel as a link any client can open in a browser and comment on. It runs everywhere — web, Mac, Windows, iPhone, Android.

Its trade-offs are a cloud service’s: nothing works offline (Milanote’s own help center says an internet connection is required to view and edit), notes live on Milanote’s servers, export happens one board at a time, and the free plan caps at 100 notes, images, and links combined — roughly two small projects — before the $9.99 per person per month yearly plan starts. If your boards are deliverables for other people, Milanote earns its subscription. If they’re your own thinking, see Acres vs Milanote.

Scrintal: cards in a browser tab

Scrintal draws nearly the same picture as Acres — Markdown-ish cards on a visual canvas, links between them — with the opposite storage model: it’s a cloud service, opened in any browser or via its Mac and Windows clients, at $9 a month billed annually (the only plan listed; its own pages say a free tier is coming). Real-time collaboration is built in, and it has been iterating on the same idea since 2021.

Your notes, though, are records in Scrintal’s cloud; offline is a sync-later cache rather than the default; and no agent access is documented. To its credit, the exit is honest — your whole archive exports as a zip of Markdown files, though board layouts don’t survive the trip. Details in Acres vs Scrintal.

Acres: the canvas as files you keep

Acres is our answer to this page’s question, so apply the grain of salt yourself. It’s a canvas-first note app for macOS and Windows — a one-time $59 purchase after a 14-day trial, no account. Every card on the board is a CommonMark Markdown file; every board is readable JSON; all of it sits in a folder you pick. Close the app and your notes are still just files — searchable by grep, syncable by anything, and readable by AI agents, which is the part we built hardest: a bundled MCP server with 29 tools, a CLI, a ledger that records every agent edit with word-level diffs and one-click revert, and a live 3-way merge so an agent can work in the vault while you type. The built-in AI panel is bring-your-own-key from seven providers, or Ollama running locally — no subscription either way. Coming from one of the apps above? There are importers for Heptabase backups (board geometry preserved) and Obsidian vaults (folders become boards, wikilinks become connections).

Now the limits, stated as plainly as everyone else’s: no mobile, web, or Linux version; no collaboration of any kind; no plugin ecosystem; and it’s the newcomer here — every other app on this page has more years behind it. What it offers instead is a combination no other app on this page has — the canvas as the whole app, and the notes as plain files you own — which is why we’d call it the strongest ownership story in the category. An optional end-to-end encrypted sync service exists for when your files need to travel. How agents actually work in it: Acres for AI agents.

What about Miro, FigJam, Excalidraw, and tldraw?

They come up in every canvas search, so the boundary is worth drawing. These are whiteboards — superb for workshops, diagrams, and meetings, wrong as note systems. Miro’s free plan keeps your three most recent boards editable, then it’s $8 per member per month billed annually. FigJam is now sold inside Figma’s seat model — the $3/month Collab seat is the cheapest full access, with three files on the free tier. Excalidraw is a lovely MIT-licensed sketchboard, free at excalidraw.com, with a $6-per-user-per-month collaboration service (billed annually); tldraw is a free whiteboard whose real business is its React SDK. None of them has a note format underneath — no linking, tagging, or local files — so use them for what they are, next to whichever notes app you pick above. (If what you actually want is diagrams generated from notes, that’s a different genre again — see AI mind mapping on the Mac.)

Two cautionary tales

The canvas category had a turbulent year, and it sharpened this page’s main question. Kosmik — an inventive spatial browser-canvas — announced its sunset for May 31, 2026; sign-ups are closed, and remaining users are exporting what they can. Muse, the local-first canvas born at Ink & Switch, tells a gentler version of the same story: it passed from a seven-person team to a solo developer in late 2023, and in mid-2026 was renamed Allume — a rename only, its maker was explicit, with the free tier and $9.99/month Unlimited plan carrying on for Mac, iPad, and iPhone. The lesson isn’t that small tools fail; it’s that every app on this page will someday change — teams shrink, names change, services sunset — and the only part of your thinking guaranteed to survive is whatever exists as files on your own disk. Judge the six accordingly. (More on switching paths: the comparison hub.)

How do you choose?

Ask two questions in order. First: are you making boards with people or for yourself? Collaboration points you at Heptabase, Milanote, Scrintal, or Freeform; solo thinking points at Obsidian or Acres. Second: when this app is gone — acquired, sunset, or just abandoned by you — what do you want left behind? If the answer is “files I still own,” only two of the six can promise it — and only one of those two was built canvas-first. That one is ours.

Prices were verified against each vendor’s pricing page on 2026-08-19. Every comparison linked above says where the other tool wins — that’s the house rule.