Limnu
Limnu is an online whiteboard for sketching, sharing, brainstorming, and real-time collaboration.
What Limnu is
Limnu is an online whiteboard for sketching, sharing, brainstorming, and real-time collaboration. Its boards have no edge boundaries, and Pro and Team plans include unlimited boards. Users can search, sort, and bulk-edit whiteboards, while diagramming tools, guest collaboration, and presentation mode support visual work. Common uses include team brainstorming, tutoring, process flows, state diagrams, product prioritization, and storyboard reviews. Tutors can upload PDFs, JPEGs, PNGs, PowerPoint, Excel, and Word files and hold built-in video calls for up to eight participants. Solo Draw lets students view updates without editing, while pins and Leading help direct attention. Team administrators can control sharing, restrict it to the organization, and manage access, invitations, and sharing rights. Limnu runs on web, iOS, and Android and offers an API plan for embedding whiteboards. The Free plan costs nothing; Pro costs $5 a month, and Team costs $8 a month per member.
Good
- Open-ended whiteboard canvas
- Real-time collaboration and guest access
- Education file uploads and video calls
- Team sharing and security controls
- Web, iOS, and Android platforms
Watch out
- Free video calls limited to 30 minutes
- Slack integration is being upgraded
- API and Enterprise pricing not listed
Who it suits
Limnu suits teams, tutors, students, and individuals who need shared visual boards. Its education controls fit instructors guiding participants through collaborative lessons.
Verdict
Limnu offers a broad collaborative whiteboard with teaching controls, presentation tools, and multiple platforms. The free plan provides an entry point, while paid tiers add unlimited boards, conferencing, and team administration.
Plans and prices
From Limnu's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 14-day whiteboard access · unlimited collaborators · collaborative or solo drawing · limited admin/security · 30 minutes video conferencing |
| Pro | $5 a month | unlimited boards · unlimited collaborators · private/collaborative boards · unlimited video conferencing · $5/month or $50/year (save $10) |
| Team | $8 a month | unlimited boards and collaborators · team/private boards · team security controls · unlimited video conferencing · $8/month per team member or $80/year (save $16) |
| API | Priced on request | embedded whiteboards · no downloads · no Limnu registration or branding · Limnu-hosted sessions |
| Enterprise | Priced on request | Team and Pro features · dedicated customer-success manager · personalized training and onboarding |
The facts
Each one read from Limnu's own pages, with the date it was checked.
What it does
- API access
- API keys and endpoints are issued manually by Limnu support to team accounts, and API calls can create additional charges.checked 15 Oct 2026
- API capability
- The external API embeds Limnu whiteboards in third-party apps and exposes user and board functions including create, list, copy, rename, delete and image upload.checked 15 Oct 2026
- API commercial model
- API access requires a signed contract, with nominal development-period fees and usage fees after launch.checked 15 Oct 2026
- API protocol
- API v1 functions use POST requests with JSON bodies and JSON responses containing a boolean success field.checked 15 Oct 2026
- Board organization
- Board organization supports searching, sorting and bulk editing of boards.checked 15 Oct 2026
- Canvas and boards
- Boards have no edge boundaries, and Pro and Team plans include unlimited boards.checked 8 Oct 2026
- Content import
- The tutoring product page lists support for PDFs, JPEG, PNG, PowerPoint, Excel and Word files.checked 15 Oct 2026
- Documentation depth
- The API documentation lists endpoints for users, boards, usage, image uploads and menu controls, but says the API is still in active development.checked 15 Oct 2026
- Education features
- Tutors can upload PDFs, JPEGs, PNGs, PowerPoint, Excel, and Word files, and use built-in video conferencing for up to eight participants.checked 8 Oct 2026
- Infinite canvas
- Boards have no edge boundaries and include an indicator to help users locate off-screen work.checked 15 Oct 2026
- Integrations
- A Slack integration can create a shared Limnu board from a Slack slash command.checked 15 Oct 2026
- Limit
- The Free plan includes 30 minutes of video conference call time; Pro and Team list unlimited video conferencing time.checked 8 Oct 2026
- Limit: feature gaps
- A Capterra reviewer praised the whiteboard but identified absent screen sharing as a near deal-breaker for tutoring.checked 15 Oct 2026
- Limit: iPad usability
- Apple App Store reviews complain about absent palm rejection, accidental zooming, distorted handwriting and sign-in problems.checked 15 Oct 2026
- Limit: missing export and tools
- G2 reviewers report limited export quality, no rotate tool, limited brush styles/palette and small label text.checked 15 Oct 2026
- Limit: screen sharing
- G2 and Capterra reviewers note that Limnu lacks desktop screen sharing and may require a separate conferencing tool.checked 15 Oct 2026
- Limit: subscription cancellation
- The sole Trustpilot reviewer reported being unable to cancel after leaving a job and said support did not respond.checked 15 Oct 2026
- Organization
- Users can search, sort, and bulk-edit whiteboards.checked 8 Oct 2026
Where it runs
- App system requirements
- The App Store lists iOS/iPadOS 9.2 or later and macOS 11 or later on Apple silicon Macs.checked 15 Oct 2026
- GetApp feature ratings
- GetApp lists collaboration tools and discussions/forums at 5.0, while video conferencing is rated 1.0 from one review.checked 15 Oct 2026
The company
- Company
- The About page identifies Andrew Kunz as Limnu’s CEO and founder.checked 8 Oct 2026
- Company size and HQ
- LinkedIn lists Limnu as a privately held software company with 2–10 employees headquartered in San Mateo, California.checked 15 Oct 2026
- Founded
- Limnu says it was founded in 2015 by two former film-studio employees.checked 15 Oct 2026
- Headquarters
- San Mateo, California, United Stateschecked 28 Sep 2026
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