Heptabase

Heptabase is the visual thinking app for people who need to actually understand things, not just store them. It's a whiteboard-meets-notes hybrid where cards live on infinite canvases and you arrange them spatially as your understanding deepens. If Notion is a database and Obsidian is a graph, Heptabase is a workshop.

The product launched out of Y Combinator in 2022 and quickly built a cult following among researchers, PhD students, and product strategists. Founder Alan Chan writes thoughtfully about thinking tools, which shows up in the product. Heptabase has opinions about how to think.

The pitch is that whiteboarding and note-taking should live in the same tool. You can't really think with notes alone or whiteboards alone. Heptabase merges them, and once you get it, going back feels limiting.

What Heptabase actually does

You write notes as cards. You drop those cards on infinite whiteboards. You arrange the cards spatially to reflect how concepts relate. Cards can appear on multiple whiteboards. Edit a card on one board, it updates everywhere.

Around that core, Heptabase ships PDF annotation, journals, tags, sections, and a section-based outliner. You can study a textbook, write notes per page, surface key cards, and build a whiteboard that synthesizes the whole book. That workflow is genuinely different from anything else.

Cards on whiteboards

Cards are markdown notes. Whiteboards are infinite canvases. The interaction is fast on both desktop and iPad. Drag, link, group, color. The spatial dimension turns out to matter more than you'd expect.

Once you've built a few whiteboards on a topic you know well, you start seeing connections you missed. That's the pitch in action.

PDF reader and journal

Heptabase's PDF reader lets you highlight, annotate, and pull excerpts as cards. The journal is a daily note that links into the same card system. Together they handle the "input" side of thinking, with whiteboards handling the synthesis.

Who Heptabase is for

Researchers, students, writers, strategists, and anyone doing serious knowledge work that requires synthesis. PhDs use it to organize literature reviews. Founders use it to map markets. Teachers use it to build curricula.

It's overkill if you just need a notes app or a checklist. Heptabase shines when you have a lot of fragmented information that needs to connect. The learning curve is real, and the payoff scales with how much you put in.

Heptabase pricing

There's no free tier. Heptabase costs $11.99 a month or $99 a year billed annually. There's a 7-day free trial. No team plans yet (it's single-player by design).

The pricing puts off some users compared to Obsidian (free) or Notion ($10). The counter-argument is that Heptabase does something the free tools don't. If the workflow clicks, $99 a year is nothing for a tool you live in.

Features worth knowing

Whiteboards and sub-whiteboards

Boards can nest. A top-level whiteboard for "PhD" can contain sub-whiteboards for each chapter, each containing further synthesis boards. This nesting handles real-world complexity well.

Card linking and tags

Cards link bidirectionally. Tags work like Bear's. Together they let you find related work without manual filing. The graph view exists but isn't the focus.

PDF annotation pipeline

Highlight a PDF, the highlight becomes a card, the card lives on a whiteboard. That pipeline is the killer feature for academics.

Markdown export and offline

Notes are markdown. You can export the whole vault. Offline-first sync via local files. Owning your data is straightforward.

The tradeoffs

Heptabase is single-player. There's no real-time collab. For a team workshop, you'd use Miro or FigJam. Heptabase is for one person's thinking, not a group's.

The mobile experience trails the desktop. The iPad app is great. The phone app is okay. Heptabase isn't a "capture on the go" tool first. It's a "sit down and think" tool.

Heptabase vs alternatives

The honest comparisons are Heptabase vs Obsidian, Heptabase vs Roam, and Heptabase vs Scrintal. Obsidian is more flexible but text-only. Roam is graph-first. Scrintal is the closest direct competitor and ships similar card-on-canvas features.

Heptabase is the most polished card-on-canvas tool right now. See Heptabase alternatives or browse the best note-taking apps.

Bottom line on Heptabase

Heptabase is a thinking tool, not a notes tool. The distinction matters. If you mostly capture, you'll feel underutilized. If you regularly synthesize complex information, Heptabase becomes indispensable.

For researchers, deep readers, and strategists, Heptabase is the tool a lot of people wish they'd discovered earlier. The $99 a year is small if your work is thinking.

Common Heptabase questions

Is Heptabase worth $99 a year? For people doing serious knowledge work, yes. For casual note-takers, no. The cost makes sense if you spend hours weekly synthesizing complex information. If you mostly capture grocery lists, Apple Notes is fine.

How does Heptabase compare to Obsidian? Different tools. Obsidian is markdown notes with a graph and plugins. Heptabase is markdown notes plus infinite whiteboards. Obsidian is more flexible, Heptabase is more focused. Many users run both.

Does Heptabase work offline? Yes. The desktop app is local-first. Sync runs through Heptabase's cloud when you're online. You can work on a flight and sync when you land.

What's the iPad experience like?

The iPad app is excellent. Apple Pencil works for handwriting and sketching on whiteboards. The hybrid keyboard-plus-pencil workflow is genuinely powerful for thinking. Many Heptabase users do their best whiteboarding on iPad.

Can I use Heptabase as a Zettelkasten?

Sort of. The card-based model works for Zettelkasten if you tag and link consistently. The whiteboards become an additional layer for synthesis. Pure Zettelkasten purists usually prefer Obsidian or Roam, but Heptabase covers the same goals differently.

Workflow tips for Heptabase

Start with one project. Don't try to import all your notes. Pick one ongoing topic, build a whiteboard, get the workflow down. Expand from there.

Use the journal for daily capture. Daily notes link to cards. Cards live on whiteboards. The capture-then-synthesize flow is the whole point.

Resist over-organization. Heptabase rewards exploration over filing. Drop cards on whiteboards loosely. Patterns emerge as you arrange and rearrange. Premature structure kills this.

Export periodically. Heptabase's export gives you markdown files. Treat them as backup. Owning your data is a baseline expectation. Browse tools for researchers for adjacent picks.

Real-world Heptabase scenarios

A PhD student uses Heptabase for their literature review. PDFs go in. Highlights become cards. Cards get arranged on whiteboards by theme. Eventually the whiteboards become the structure of their dissertation chapters. Months of synthesis, not minutes.

A founder uses Heptabase for market research. Each interview becomes a card. Cards cluster by theme on a market-map whiteboard. Patterns emerge that wouldn't show up in a list of interview notes. The spatial arrangement does real cognitive work.

A consultant uses Heptabase for client engagements. One whiteboard per client, sub-whiteboards per project. Notes from meetings link to deliverables. The visual structure makes context-switching between clients faster. Less time getting back into the work.

How to learn Heptabase

Pick one ongoing topic. Don't import all your old notes. Just start with one project where you have actual synthesis to do.

Watch a few of the team's videos. Alan's walkthroughs of his own thinking process are genuinely useful. The model is non-obvious until you see it in action.

Don't over-organize early. Drop cards on whiteboards loosely. Move them as understanding deepens. Premature structure kills the value.

Use the journal daily. The habit of writing one journal entry per day plus tagging cards builds your knowledge base passively. Within a few months you have a real second brain. Browse the Heptabase page for community reviews.

Why Heptabase is different

Most note apps optimize for capture and search. Heptabase optimizes for synthesis. That's a meaningful philosophical difference. You can have all the world's notes in Notion and still not understand the topic. Heptabase helps you understand.

The card-on-canvas model isn't original; mind-mapping tools have done versions of this for decades. What Heptabase nails is the integration of cards with structured note-taking. Cards aren't just labels on a diagram; they're full markdown notes with backlinks. The synthesis layer connects to the writing layer.

For knowledge workers who routinely synthesize complex information (researchers, strategists, deep readers), this matters a lot. The visual rearrangement of ideas reveals connections that reading flat notes doesn't. The thinking happens in the tool, not despite it.

Heptabase is one of those tools where the workflow matters more than any single feature. Once you build a few whiteboards and feel the value, going back to flat notes feels limiting. That's the sign of a tool that's actually changing how you work, not just where you store things.

Heptabase's growth challenge

The hard part about Heptabase isn't the product, it's the audience. Most people don't synthesize information for a living. The card-on-canvas model offers diminishing returns to people who just take notes occasionally. Heptabase's market is real but not huge.

For the audience it serves, though, the loyalty is intense. Researchers and deep readers who try Heptabase tend to stay. The tool becomes part of how they think. Switching cost isn't just about exporting notes; it's about losing the workflow that helps them understand topics.

For founders evaluating thinking tools in 2026, Heptabase deserves a serious look if you do strategic synthesis often. If your work is mostly tactical execution, simpler tools fit better. The question is what kind of work you actually do, not what you wish you did.