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Remote Work · head to head

Slack Workflow Builder vs Whimsical

Slack Workflow Builder logo

Slack Workflow Builder

Remote Work

Automation for team collaboration

From
On request
Rated
-
Full reviewWebsite
Whimsical logo

Whimsical

Technology

Where great ideas take shape

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Whimsical has a free tier, so it costs nothing to try first.
  • Each has a real cost: Slack Workflow Builder limited to Pro and above pricing tiers, requiring paid Slack subscription; Whimsical the free plan is capped at 3 team boards, 3 teams and 10 guest seats
  • They diverge on capability: Slack Workflow Builder covers Workflow builder, Whimsical covers Flowcharts.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Slack Workflow Builder and Whimsical actually diverge.

Attributes where Slack Workflow Builder and Whimsical differ
AttributeSlack Workflow BuilderWhimsical
Starting priceOn requestFree
Pricing modelUnknownsubscription
Free tierNoYes
PlatformsWeb, macOS, Windows, iOS, AndroidWeb
CategoryRemote WorkTechnology
Founded20132017

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Slack Workflow Builder

  • Workflow builder
  • App integrations
  • Scheduled workflows
  • Conditional logic
  • Error handling
  • Notifications
  • Analytics
  • 1000+ apps

Only in Whimsical

  • Flowcharts
  • Wireframes
  • Mind maps
  • Sticky notes
  • Docs
  • Real-time collaboration
  • Templates
  • Keyboard shortcuts

Both cover

  • GDPR
  • Cloud deployment

What people use each for

The jobs each tool is most often brought in to do.

Slack Workflow Builder

  • Workflow Automationnot Whimsical
  • Data Integrationnot Whimsical
  • Process Automationnot Whimsical
  • App Integrationnot Whimsical
  • API Connectivitynot Whimsical

Whimsical

  • Product planningnot Slack Workflow Builder
  • UI/UX designnot Slack Workflow Builder
  • Brainstormingnot Slack Workflow Builder
  • Process documentationnot Slack Workflow Builder
  • Project visualizationnot Slack Workflow Builder

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Slack Workflow Builder

  • Limited to Pro and above pricing tiers, requiring paid Slack subscription
  • Maximum 15 conditional branches per workflow, limiting complex logic paths
  • Connectors must be explicitly configured per integration type
  • No native web interface for non-Slack users

Whimsical

  • The free plan is capped at 3 team boards, 3 teams and 10 guest seats
  • File uploads are limited to 5MB per file and 1GB in total on the free plan
  • Version history on the free plan goes back 7 days
  • Voting, the timer, private teams, the GitHub integration, password-protected files and watermark removal all need Pro at $10 per editor per month
  • SSO and SAML are Business tier only at $20 per editor per month

Pricing, plan by plan

Slack Workflow Builder

On request

No published plan breakdown. See the Slack Workflow Builder review.

Whimsical

Free
  • StarterFree
    • Up to 4 boards
    • Unlimited viewers
    • 7-day version history
  • Pro$10/month
    • Unlimited boards
    • Unlimited version history
    • Advanced permissions
  • Org$20/month
    • Everything in Pro
    • SSO
    • User management

Which should you pick?

Choose Slack Workflow Builder if

  • You need workflow builder.
  • You work on Web, macOS, Windows, iOS, Android.
  • You also want app integrations.
Slack Workflow Builder review

Choose Whimsical if

  • You need flowcharts.
  • You want to start without paying.
  • You also want wireframes.
Whimsical review

Questions people ask

Is Slack Workflow Builder or Whimsical better?
Neither clearly leads. Slack Workflow Builder starts at On request and Whimsical at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Slack Workflow Builder or Whimsical?
Whimsical has a free tier; the other does not. Paid plans start at On request for Slack Workflow Builder and Free for Whimsical.
Does Slack Workflow Builder or Whimsical run on more platforms?
Slack Workflow Builder runs on Web, macOS, Windows, iOS, Android. Whimsical runs on Web.
Can I use Whimsical for free?
Yes. Whimsical has a free tier, so you can try it without paying. Slack Workflow Builder starts at On request.
What is Slack Workflow Builder best used for?
Slack Workflow Builder is most often used for workflow automation, data integration, process automation, app integration. Of those, workflow automation and data integration are not what Whimsical is typically brought in for.
What can Slack Workflow Builder do that Whimsical cannot?
Slack Workflow Builder covers Workflow builder, App integrations, Scheduled workflows, Conditional logic. Whimsical covers Flowcharts, Wireframes, Mind maps, Sticky notes. Both handle GDPR, Cloud deployment.

Answered from the vendors’ own pages

Slack Workflow Builder: Is Slack Workflow Builder included in all Slack plans?

No, Workflow Builder is only available in Slack Pro, Business+, and Enterprise plans. It is not included in the Free plan.

Source
Whimsical: What are Whimsical's pricing tiers?

Whimsical offers three plans: Free at 0 dollars per month per editor, Pro at 10 dollars per month per editor, and Business at 20 dollars per month per editor.

Source
Slack Workflow Builder: Can Workflow Builder connect to external applications?

Yes, Workflow Builder supports connectors that translate actions in Slack to instant results in third-party tools, allowing workflows to interact with your full application stack.

Source
Whimsical: What is included in the Free plan?

The Free plan allows creation of up to 50 board objects and 50 doc blocks per month, includes watermarked exports, and provides 7-day version history. Storage is limited to 1GB.

Source
Slack Workflow Builder: What is the maximum complexity of Slack Workflows?

Workflows support conditional logic with up to 15 conditions, enabling complex decision paths for automation.

Source
Whimsical: What features unlock in the Pro plan?

The Pro plan removes the object creation limits, provides unlimited board objects and doc blocks, removes watermarks from exports, extends version history to 90 days, and offers 100GB of storage.

Source
Whimsical: What security and team features come with Business?

The Business plan adds private teams, SAML single sign-on, SCIM and advanced security controls, unlimited version history, priority support, and a dedicated success manager. Storage starts at 2TB.

Source
Whimsical: Do discounts apply for annual billing?

Yes, annual billing offers a 17 percent discount compared to monthly rates. Additionally, nonprofits receive a 20 percent discount and students and teachers get full access.

Source
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