Obsidian vs Heptabase: plain files or whiteboard thinking?
Heptabase vs Obsidian usually gets framed as “Canvas vs a whole app” — and that framing decides most switches. Obsidian is a free Markdown editor with a canvas feature; Heptabase is a whiteboard-native learning tool where cards, maps and PDF annotation are the product, wrapped in one of the fastest release cadences in the category and a hard-charging AI agenda. One has no subscription; the other has no free plan. Here’s how to pick without buying the wrong philosophy.
The short answer: if spatial thinking is occasional for you, Obsidian plus its Canvas covers it for free. If laying ideas out on a board is how you understand things — studying, research, sense-making from PDFs — Heptabase is the best tool built for that, and worth its subscription. The mistake is paying for Heptabase as a note archive, or forcing deep visual work into Obsidian Canvas.
- Choose Obsidian if notes are primarily written, linked and searched — with the occasional diagram — and you want local files, two thousand plugins, and $0. Canvas handles light spatial work.
- Choose Heptabase if you learn by mapping — arranging cards, drawing connections, annotating PDFs on the same board — and want built-in AI that works across your whole knowledge base. Budget from $8.99/month (billed annually); there’s no free plan.
What is Obsidian?
Obsidian stores your notes as plain Markdown files in a folder on your own device — a “vault” you can read with any text editor, back up however you like, and keep forever. On top of those files it layers backlinks, a graph view, a Canvas whiteboard, and Bases (native database views over your notes, added in 2025). The app is completely free, including for commercial use since early 2025.
Its defining feature is the community: roughly two thousand plugins extend it with everything from spaced repetition to Kanban boards to AI integrations. Official add-ons are paid — Sync ($4/month, end-to-end encrypted) keeps vaults identical across devices, and Publish ($8/month) turns notes into a public site. There’s no web app; Obsidian runs as desktop and mobile apps against your local files.
What is Heptabase?
Heptabase is for people who think spatially. Notes are cards; understanding happens by laying them out on infinite whiteboards, drawing connections, grouping into sections and mindmaps, and annotating PDFs alongside. It’s a deliberate take on learning deeply — less “capture everything” and more “make sense of what you’re studying” — and nothing else in this list matches its canvas experience.
Cards support Markdown, backlinks, tags with table views, and journals, so it still functions as a complete note system off the whiteboard. It runs on desktop, web and mobile with offline support and cloud sync. There’s no free plan (7-day trial); 2026 pricing is AI-credit-tiered — Pro at $8.99/month (annual) with Premium tiers above it for heavier AI use.
Obsidian vs Heptabase at a glance
| Obsidian | Heptabase | |
|---|---|---|
| Price | App free; Sync $4/mo; Publish $8/mo (annual billing) | Pro $8.99/mo (annual); Premium tiers for more AI credits |
| Free plan | Yes — the entire app, including commercial use | No — 7-day trial |
| Platforms | Windows, macOS, Linux, iOS, Android — no web app | Web, macOS, Windows, Linux, iOS, Android |
| Storage model | Local-first — plain Markdown files on your device | Cloud-synced with strong offline support |
| Editing model | Markdown documents with backlinks, Canvas and Bases | Cards on infinite whiteboards; Markdown, mindmaps, sections |
| Backlinks & wiki links | Yes — [[wiki links]] with backlinks panel | Yes — card links and backlinks |
| Graph view | Yes — 2D graph view | Whiteboards serve as the visual map |
| Search | Full-text; semantic search via community plugins | Full-text |
| Web capture | Official web clipper extension | Limited — no first-party clipper |
| Email-in capture | No | No |
| RSS / feeds | Via community plugins | No |
| Team collaboration | Limited — shared Sync vaults, no real-time co-editing | Limited — shared whiteboards |
| Publishing & sharing | Obsidian Publish ($8/mo) for public note sites | Read-only whiteboard sharing |
| AI assistant access | No official AI; community plugins and MCP servers | Built-in AI (credit-metered); no MCP |
| Offline access | Yes — fully offline | Yes |
| Open source | No — proprietary app, open file format | No |
| End-to-end encryption | Yes — Sync is end-to-end encrypted | No |
| Data export | Files are already portable Markdown | Markdown, PDF |
Pricing and features as of mid-2026 — check each product’s site for current details.
New to this category? Start here: choosing a second brain app — every tool on this page, with a pick for each kind of thinker.
Whiteboard-native vs canvas-added
The comparison people actually want is Heptabase vs Obsidian Canvas, and it’s not close. In Heptabase, the whiteboard is the primary surface: cards live on boards, group into sections and mindmaps, connect with drawn relations, and — the long-standing Obsidian sore point — everything on a board is searchable. PDFs open beside your cards with highlights that become cards themselves. Journals, tags with table views and backlinks mean it still works as a complete note system off the board.
Obsidian’s Canvas is a good feature on a file-first app: infinite boards that embed your existing notes, stored as an open JSON format. But it’s a place you put notes, not the place you think — search within a canvas has been a years-long feature request, and study workflows (PDF → cards → map) need plugin assembly. If that sentence made you nod, you’re the Heptabase user.
Pricing — free forever vs subscription-only
This is the starkest pricing gap in the category. Obsidian: free, including commercial use, with optional Sync at $4/month. Heptabase: no free plan at all — a 7-day trial, then Pro at $8.99/month billed annually ($11.99 monthly), with Premium ($17.99/month annual) and Premium+ ($53.99/month annual, added March 2026) tiers that mainly buy more AI credits and unlimited PDF parsing.
The honest framing: you’re not paying Heptabase for note storage — you’re paying for the whiteboard engine and, increasingly, the AI layer. If you won’t use either, the subscription buys you polish you can live without.
AI and agents — opposite bets, again
Heptabase has invested harder in AI than almost anyone in the category: whole-knowledge-base AI context (late 2025), an AI agent that edits and organizes cards (2026), an AI tutor for learning workflows, a model picker spanning OpenAI, Anthropic and open-source models — plus an official MCP server in public beta since December 2025 and a CLI (April 2026) for agent access. All of it metered by the AI credits that differentiate its pricing tiers.
Obsidian ships no built-in AI by principle; you bring your own via community plugins, filesystem MCP servers over the vault, or the official CLI (February 2026) designed for coding agents. Same trade as everywhere in 2026: AI as a bundled, metered feature vs AI as something external working on files you control.
Ownership, offline and the export question
Heptabase is offline-first in architecture (edits land locally and sync in the background) but cloud-resident in fact: your data syncs through its servers, encrypted in transit and at rest but not end-to-end. Export is real — full-workspace Markdown with per-card files, plus whiteboard image export — and honest about its limit: the spatial layout is the product, and positions, sections and mindmap structure don’t survive as Markdown. Your words leave cleanly; your maps don’t.
Obsidian’s answer is the usual one: the vault already is the export. If longevity-of-thinking-artifacts matters — maps you’ll want in ten years — that asymmetry is worth sitting with before committing deep visual work to any proprietary canvas, Heptabase’s included.
Where Obsidian shines
- True data ownership: plain Markdown files on your disk, readable by any app, with no account required and no lock-in.
- The largest plugin ecosystem in the category — if you want a workflow, someone has probably built it.
- Free for personal and commercial use; you only pay for optional Sync or Publish.
- Bases and Canvas add database views and visual thinking without leaving your local vault.
- End-to-end encrypted sync (as a paid add-on) for the privacy-conscious.
Worth knowing: There’s no web app, and multi-device use effectively requires paid Sync or DIY setups. Collaboration is weak — shared vaults exist but there’s no real-time co-editing. Out of the box it’s fairly bare; the power comes from configuring plugins yourself, which is a hobby in its own right. Capturing web content, newsletters or feeds means assembling extensions and plugins rather than anything built in.
Where Heptabase shines
- The best whiteboard-native note experience available — cards, sections, mindmaps and connections feel built-in, not bolted on.
- PDF annotation on the same canvas as your notes suits deep study workflows.
- Tags double as tables, giving light database views over cards.
- Solid offline support with sync across desktop, web and mobile.
Worth knowing: No free plan — only a 7-day trial. Collaboration is limited to shared whiteboards; it’s primarily single-player. Spatial organization is the point — if you don’t think in maps, the canvas is overhead rather than insight.
Which should you choose?
Choose Obsidian if:
- You want your notes as local files you fully control, independent of any company’s servers.
- You enjoy tinkering and want to assemble a personalized system from plugins.
- You work offline often or in environments where cloud tools are off-limits.
- You want a free tool with no note limits.
Choose Heptabase if:
- You learn by arranging ideas spatially and drawing the connections yourself.
- You study from PDFs and want annotation living next to your notes.
- A visual overview of a topic matters more to you than fast capture.
A third option: Dexi
Heptabase and Obsidian both center on knowledge you deliberately sit down to work with. If a lot of yours arrives as things you find — articles, newsletters, feeds — Dexi starts at the collection end: everything you capture from the web, your inbox or RSS becomes a searchable note, #tags and [[wiki links]] connect it as you write, and an interactive 2D and 3D graph gives you the visual overview without arranging anything by hand. Semantic search and an MCP server for Claude round it out. Free for up to 1,000 notes, $5/month after.
Frequently asked questions
Does Heptabase have a free plan?
No — only a 7-day free trial. Paid plans as of August 2026: Pro at $8.99/month billed annually ($11.99 month-to-month), Premium at $17.99/month annual with far more AI credits and unlimited PDF parsing, and Premium+ at $53.99/month annual for heavy AI use. Obsidian, by contrast, is entirely free with optional paid sync.
Is Heptabase better than Obsidian Canvas?
For serious visual work, yes. Heptabase’s whiteboards are the product’s primary surface — searchable boards, sections, mindmaps, and PDF annotation whose highlights become cards. Obsidian’s Canvas is a solid embedded-notes board, but content on it isn’t searchable and study workflows need plugin assembly. For occasional diagrams, Canvas is plenty.
Does Heptabase work offline?
Yes — the desktop apps are offline-first, storing edits locally and syncing in the background when you reconnect. Your data still lives in Heptabase’s cloud (encrypted in transit and at rest, not end-to-end), so it isn’t local-first in the Obsidian files-on-disk sense.
Can I export my notes from Heptabase?
Yes — full-workspace export to Markdown (per-card files with properties), plus per-card export and whiteboard-as-image export. The hard limit: spatial layout, sections and mindmap structure only exist on the whiteboard, so exported notes are your words without your maps. Version history covers 60 days.
Does Heptabase support MCP or AI assistants?
Yes, unusually deeply: built-in AI chat and an agent mode that can edit and organize cards, an official MCP server in public beta since December 2025, and a CLI (April 2026) for agent workflows — with model choice across OpenAI, Anthropic, and open-source models. AI usage is metered by plan credits. Obsidian offers no built-in AI; its route is community plugins, filesystem MCP servers and its official CLI.
Which is cheaper, Obsidian or Heptabase?
Obsidian, decisively: the app is free and official Sync is an optional $4/month billed annually — versus Heptabase’s subscription-only model starting at $8.99/month annual with no free tier. Over five years that’s roughly $0–240 versus $540+ (more on AI-heavy tiers). Prices as of August 2026.
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