Flow vs Slack comparison

By starting price alone, Slack is $0.19 cheaper. But price is not everything, so check the highlighted rows in the table below.

Flow and Slack compared side by side in Design and collaboration tools.

CurrencyUSDKRWEUR

Flow

Korean collaboration tool made by Madras Check, managing tasks, schedules and messaging per project in one place

What is good

  • Manages tasks, schedules and chat grouped by project
  • Many adoption cases in Korean public institutions and companies, and an on-premises version is also available

What could be better

  • Few overseas service integrations
  • No free plan, and purchase starts from a minimum of 5 users

Flow official site

Slack

Channel-based work messenger supporting a huge number of app integrations and huddles (voice calls)

What is good

  • Most app integrations
  • Clean channel and thread structure
  • Strong for collaboration with overseas partners

What could be better

  • Free plan hides messages older than 90 days
  • Costs get heavy as headcount grows

Slack official site

At a glance

Highlighted rows are where they differ.

ItemFlowVisit siteSlackVisit site
Starting price≈€7.97+ ($8.94)Converted from official price≈€7.80+ ($8.75)Official USD price
Free tierTrial onlyFree plan available
Korean supportGoodGood
What you can do for free
  • No free plan
  • 14-day free trial of paid plans
90-day message history, 10 app integrations, 1:1 huddles only, 1:1 messages only with outside organizations, basic AI features
Team size limitPaid plans start at 5 users / No maximum number of users listedNo limit on people
Good forKorean companies that want work reports and project management in one app
  • Development teams
  • Startups
  • Teams working with overseas partners
TypeDesign and collaboration toolsDesign and collaboration tools
CategoryProject Management, MessengerMessenger
CompanyMadras Check, South KoreaSalesforce, United States
Plans
  • Starter: ₩12,000 per user with monthly billing
  • ₩9,000 with yearly billing
  • 2GB file upload
  • 20 wiki pages
  • 500 AI credits per month
  • Standard: ₩18,000
  • ₩14,000
  • 70GB storage per user
  • Unlimited wiki and OKR
  • 1,500 AI credits per month
  • Pro: ₩28,000
  • ₩22,000
  • Unlimited storage
  • 5,000 AI credits per month
  • Enterprise: Contact sales
  • On-premises
  • Public cloud
  • Pro: monthly billing $8.75
  • yearly billing $7.25. Unlimited message history and integrations, group huddles, canvases, lists
  • Business+: $18
  • $15. Full AI features, workflow conditional branching, SAML SSO, SCIM, 24-hour support
  • Enterprise+: contact sales. Enterprise search, audit log, unlimited workspaces
Pros
  • Manages tasks, schedules and chat grouped by project
  • Many adoption cases in Korean public institutions and companies, and an on-premises version is also available
  • Most app integrations
  • Clean channel and thread structure
  • Strong for collaboration with overseas partners
Cons
  • Few overseas service integrations
  • No free plan, and purchase starts from a minimum of 5 users
  • Free plan hides messages older than 90 days
  • Costs get heavy as headcount grows
  • Lacks features such as approvals and attendance that Korean business messengers have

Prices and benefits may change. Check the official site before you pay.

Prices converted at 1 USD = ₩1,327.84 (2026-10-20). Original price shown in brackets. Taxes as listed by each provider.

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