Head-to-head
Totally Lean vs LeanSpark
LeanSpark is the current name for LeanCanvas.com / Leanstack.
Last verified
Same Lean Canvas framework, two very different products. Totally Lean runs entirely in your browser with no account, no server, and free AI features that edit what you wrote. LeanSpark is Ash Maurya's AI-first Lean Canvas tool.
The short answer
The short answer
- Pick Totally Lean if
- You want to sketch a business model tonight, without a signup flow between you and the canvas.
- Pick LeanSpark if
- You want the canonical app from the framework's creator.
Why this comparison exists
If you're searching for LeanCanvas.com you've already noticed that LeanCanvas.com now redirects to LeanSpark, the AI-first product from Ash Maurya's company Leanstack. The comparison founders ask is whether the canonical Lean-Canvas app from the framework's creator is the right pick, or whether something simpler that respects their data and budget would do the same job. Both products fill the same nine sections, but the workflows are opposite: LeanSpark interviews you and writes the canvas; Totally Lean gives you a blank canvas and uses AI to edit what you've written. This page covers pricing, AI workflow, data handling, and the practical question of whether the original-author premium is worth a paid plan and a sign-up flow.
Feature-by-feature
All claims about LeanSpark are drawn from their public site as of . Disclosure: Totally Lean is our product, competitor rows are cross-checked against leanspark.ai.
| Feature | Totally Lean | LeanSpark |
|---|---|---|
| Free forever (every feature) | Free forever (every feature) — Totally Lean: Yes. Yes | Free forever (every feature) — LeanSpark: Partial. Partial Free tier exists; paid tiers are advertised but not priced on the landing page |
| Requires an account to start | Requires an account to start — Totally Lean: No. No | Requires an account to start — LeanSpark: Yes. Yes |
| Canvas stored in your browser (not a server) | Canvas stored in your browser (not a server) — Totally Lean: Yes. Yes | Canvas stored in your browser (not a server) — LeanSpark: No. No Cloud-hosted — account-backed |
| Share via URL — recipient needs no account | Share via URL — recipient needs no account — Totally Lean: Yes. Yes | Share via URL — recipient needs no account — LeanSpark: Not documented. Not documented |
| Local AI rewrites a single field you wrote | Local AI rewrites a single field you wrote — Totally Lean: Yes. Yes Four styles, runs in your browser | Local AI rewrites a single field you wrote — LeanSpark: No. No |
| Local AI writes a 90-second pitch from your canvas | Local AI writes a 90-second pitch from your canvas — Totally Lean: Yes. Yes Five tones, 90-second spoken pitch | Local AI writes a 90-second pitch from your canvas — LeanSpark: No. No |
| Cloud AI drafts the canvas from a prompt | Cloud AI drafts the canvas from a prompt — Totally Lean: No. No By design — AI edits what you wrote, it doesn't write for you | Cloud AI drafts the canvas from a prompt — LeanSpark: Yes. Yes AI interviews you and auto-fills the canvas |
| Read-aloud / text-to-speech | Read-aloud / text-to-speech — Totally Lean: Yes. Yes Browser voice + optional local Kokoro upgrade | Read-aloud / text-to-speech — LeanSpark: No. No |
| Thread tagging across sections | Thread tagging across sections — Totally Lean: Yes. Yes | Thread tagging across sections — LeanSpark: No. No |
| Item-to-item links | Item-to-item links — Totally Lean: Yes. Yes | Item-to-item links — LeanSpark: No. No |
| Weighted Sankey flow diagram | Weighted Sankey flow diagram — Totally Lean: Yes. Yes | Weighted Sankey flow diagram — LeanSpark: No. No |
| Four views (Doc / Grid / Flow / Canvas) | Four views (Doc / Grid / Flow / Canvas) — Totally Lean: Yes. Yes | Four views (Doc / Grid / Flow / Canvas) — LeanSpark: No. No |
| Validation markers (assumption / validated / invalidated) | Validation markers (assumption / validated / invalidated) — Totally Lean: Yes. Yes | Validation markers (assumption / validated / invalidated) — LeanSpark: Yes. Yes |
| Version history | Version history — Totally Lean: Yes. Yes Up to 20 snapshots per canvas | Version history — LeanSpark: Not documented. Not documented |
| Real-time multi-user editing | Real-time multi-user editing — Totally Lean: No. No Async via URL share; no real-time co-edit | Real-time multi-user editing — LeanSpark: Not documented. Not documented |
| Team accounts with permissions | Team accounts with permissions — Totally Lean: No. No | Team accounts with permissions — LeanSpark: Not documented. Not documented |
| Built-in coaching / mentor network | Built-in coaching / mentor network — Totally Lean: No. No | Built-in coaching / mentor network — LeanSpark: Yes. Yes Running Lean methodology ecosystem |
| PNG export | PNG export — Totally Lean: Yes. Yes | PNG export — LeanSpark: Not documented. Not documented |
| PDF export | PDF export — Totally Lean: Partial. Partial Via browser Print → Save as PDF | PDF export — LeanSpark: Not documented. Not documented |
| JSON export + import round-trip | JSON export + import round-trip — Totally Lean: Yes. Yes | JSON export + import round-trip — LeanSpark: Not documented. Not documented |
| Works offline after first load | Works offline after first load — Totally Lean: Yes. Yes | Works offline after first load — LeanSpark: Not documented. Not documented |
| Pricing | Free forever Free forever. Every feature. No paid tier, no trial, no 'contact sales.' | Not published Free tier with 'no credit card required' is advertised on the homepage; paid tier pricing is not published on the landing page as of 2026-04-23. Verify current pricing on leanspark.ai before relying on this. |
How they handle your data
LeanSpark stores your canvas on Leanstack's servers — that's how the AI workflow, real-time mentor sharing, and saved-prompt history work. The vendor's privacy policy describes standard cloud storage with encryption in transit; encryption-at-rest specifics are not publicly documented. Practically: your idea, your customer hypotheses, and your competitive theory live on a third party's infrastructure for as long as you keep the account. Totally Lean takes the opposite approach. Every canvas is stored in your browser's localStorage and a JSON export on disk if you want one. There's no database we run, no auth system, no telemetry. If you delete your browser cache, the canvas is gone — including from us. Choose the one that matches how confidential the work is.
AI: what edits, what drafts
Imagine you've written a single sticky in the Problem section: "Founders forget to refresh their canvas after they pivot." In LeanSpark, the AI takes the broader idea you described in your initial brief and drafts entire stickies — Problem, Customer Segments, UVP — based on its model of similar businesses. You then review and accept the suggestions. The AI is the author; you are the editor. In Totally Lean, the same sticky goes through one of four polish styles: Tighten ("Founders forget to refresh after a pivot."), Concrete ("Solo founders skip canvas updates after pivots, so the doc lies within six weeks."), Sharpen (passive→active), or Shorter (hard cap). The AI never invents content it wasn't shown. Same canvas, opposite philosophies: drafting AI starts from a description; editing AI starts from your words. Pick LeanSpark if you want a co-author. Pick Totally Lean if you want a copy-editor.
Where Totally Lean wins
No account — open the URL, you're editing.
Your canvas never touches a server.
AI runs in your browser; nothing sent to a third party.
One-URL sharing — recipient needs no account to view.
Four views over one dataset: Doc, Grid, Flow (Sankey), Canvas.
Free forever. Every feature. Every version.
Where LeanSpark wins
Honest list. If your use case maps to any of these, their product fits better than ours.
Built by Ash Maurya, who created the Lean Canvas framework.
AI-first workflow: describe your idea in plain English, watch the canvas populate.
Paired with the Running Lean methodology and mentor network.
Stress-tests assumptions across seven named dimensions (Clarity, Desirability, Viability, Feasibility, Defensibility, Mission, Timing).
Free. No signup. Loads in your browser.
When to pick which
Pick Totally Lean if…
- You want to sketch a business model tonight, without a signup flow between you and the canvas.
- Your early hypotheses shouldn't sit on a third party's server.
- You want AI help on your canvas — but the AI should edit what you wrote, not write for you.
- You share canvases with people who shouldn't have to install or sign up for anything.
- You want the Sankey flow, threads, and weighted validation without paying.
Pick LeanSpark if…
- You want the canonical app from the framework's creator.
- You want the AI to draft the first version of your canvas from a prompt, not edit what you wrote.
- You're working with a Running Lean coach and want tight tool-method alignment.
- You're comfortable with your canvas living on a third-party server.
Related comparisons
Evaluating Lean Canvas tools is rarely a binary choice. If you’re weighing LeanSpark you may also be looking at:
Methodology & sources
- What was compared
- Feature availability on the public product, pricing on the public pricing page, and data-handling claims published by the vendor. Features marked as local ai rewrites a single field you wroteor similar are treated as “yes” only when the vendor documents them publicly; unverified items show as “not documented.”
- What was tested
- Totally Lean: the author uses and maintains it. LeanSpark: observed from the public marketing site and documentation. We did not test paid tiers or private team features.
- Sources
- Totally Lean: https://leancanvas.online
- LeanSpark: https://leanspark.ai/leancanvas (checked )
- Conflicts of interest
- Totally Lean is our product. Competitor strengths are named honestly above. No ratings are fabricated and no reviews are aggregated.
You don’t need a seat license to test an idea.
Open Totally Lean, pick a template or start blank. Nothing to install. Nothing to sign up for. If it doesn’t click, close the tab.