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Communication · head to head

Kakao Work vs Signal

Kakao Work logo

Kakao Work

Communication

Korean business messaging built on the KakaoTalk interface for domestic enterprise teams

From
Free
Rated
-
Full reviewWebsite
Signal logo

Signal

Communication

Speak Freely

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Kakao Work the product, documentation, support and commercial materials are Korea-first, so a company with overseas offices ends up running a second messaging tool for non-Korean staff and splitting its conversation history across two systems.; Signal signal must be installed on a phone before the desktop app can be used, so there is no phone-free desktop-only account
  • They diverge on capability: Kakao Work covers KakaoTalk-style messaging, Signal covers End-to-end encryption.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Kakao Work and Signal actually diverge.

Attributes where Kakao Work and Signal differ
AttributeKakao WorkSignal
Pricing modelPer user per monthfree
PlatformsWeb, Windows, macOS, iOS, AndroidWindows, Macos, Linux, Ios, Android
FoundedUnknown2010

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Communication).

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 Kakao Work

  • KakaoTalk-style messaging
  • Organisation chart
  • Video meetings
  • Kakao Work Drive
  • Approvals and workflow
  • Bots and open API
  • Admin retention controls
  • Casper AI assistant

Only in Signal

  • End-to-end encryption
  • Disappearing messages
  • Screen security
  • Group chats
  • Voice calls
  • Video calls
  • File sharing
  • No data collection

What people use each for

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

Kakao Work

  • A Korean manufacturer moving work conversations off staff personal KakaoTalk accounts and into a tenant with retention and audit controlsnot Signal
  • A Korean public agency that must keep official communications on a domestically operated service with records exportnot Signal
  • A mid-sized Korean firm whose warehouse and field staff will not adopt Slack but already use KakaoTalk dailynot Signal
  • A Korean company that wants approvals, chat and the organisation chart in one tool rather than paying separately for groupware and messagingnot Signal

Signal

  • Private messagingnot Kakao Work
  • Secure group communicationnot Kakao Work
  • Confidential conversationsnot Kakao Work
  • Journalism communicationnot Kakao Work
  • Family messagingnot Kakao Work

Where each one falls short

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

Kakao Work

  • The product, documentation, support and commercial materials are Korea-first, so a company with overseas offices ends up running a second messaging tool for non-Korean staff and splitting its conversation history across two systems.
  • The third-party integration catalogue is small next to Slack or Microsoft Teams, so connecting a Western SaaS stack usually means writing against the open API yourself rather than installing an app.
  • Prices are set and billed in Korean won with 10 percent VAT added on top, which makes cost forecasting awkward for any buyer whose budget is held in another currency.
  • Kakao Enterprise has restructured repeatedly since 2023 and refocused around AI, which puts long-term roadmap certainty for the collaboration suite below that of a vendor whose only product this is.
  • The deliberate resemblance to consumer KakaoTalk is a training advantage but a governance risk: staff move between the two apps by habit and a share of work conversation keeps leaking back to personal accounts, which is precisely what the tool was bought to stop.

Signal

  • Signal must be installed on a phone before the desktop app can be used, so there is no phone-free desktop-only account

Pricing, plan by plan

Kakao Work

Free
  • FreeFree
    • Core messaging
    • Basic video meetings
    • Limited shared storage
  • Mini$2400/month
    • Messaging-focused plan
    • Message encryption and security controls
    • Annual billing rate; monthly billing is 2,900 KRW
  • Standard$6500/month
    • Mail and collaboration tools
    • Larger drive capacity
    • Approvals and workflow
  • Premium$9900/month
    • Large storage allocation
    • All user and administrator features
    • AI assistant features

Signal

Free
  • FreeFree
    • End-to-end encrypted messaging
    • Voice and video calls
    • Group chats

Which should you pick?

Choose Kakao Work if

  • You need kakaotalk-style messaging.
  • You want to start without paying.
  • You work on Web, Windows, macOS, iOS, Android.
  • You also want organisation chart.
Kakao Work review

Choose Signal if

  • You need end-to-end encryption.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android.
  • You also want disappearing messages.
Signal review

Questions people ask

Is Kakao Work or Signal better?
Neither clearly leads. Kakao Work starts at Free and Signal at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kakao Work or Signal?
Kakao Work starts at Free and Signal at Free.
Does Kakao Work or Signal run on more platforms?
Kakao Work runs on Web, Windows, macOS, iOS, Android. Signal runs on Windows, Macos, Linux, Ios, Android.
Can I use Kakao Work for free?
Both have a free tier, so you can try either at no cost before committing.
What is Kakao Work best used for?
Kakao Work is most often used for a korean manufacturer moving work conversations off staff personal kakaotalk accounts and into a tenant with retention and audit controls, a korean public agency that must keep official communications on a domestically operated service with records export, a mid-sized korean firm whose warehouse and field staff will not adopt slack but already use kakaotalk daily, a korean company that wants approvals, chat and the organisation chart in one tool rather than paying separately for groupware and messaging. Of those, a korean manufacturer moving work conversations off staff personal kakaotalk accounts and into a tenant with retention and audit controls and a korean public agency that must keep official communications on a domestically operated service with records export are not what Signal is typically brought in for.
What can Kakao Work do that Signal cannot?
Kakao Work covers KakaoTalk-style messaging, Organisation chart, Video meetings, Kakao Work Drive. Signal covers End-to-end encryption, Disappearing messages, Screen security, Group chats.

Answered from the vendors’ own pages

Kakao Work: Can a non-Korean company use Kakao Work?

Technically yes, and the app supports several interface languages, but support, billing and the integration catalogue assume a Korean entity. Most non-Korean buyers should not.

Signal: How much does Signal cost?

Signal is free for everyone. The messaging app is supported by grants and donations, not user fees, and is maintained by an independent nonprofit that is not tied to any major tech companies.

Source
Kakao Work: Is there a genuinely free plan?

Yes. The Free tier gives core messaging and basic meetings with limited storage, no trial expiry.

Signal: Does Signal have ads?

No. Signal is ad-free and does not collect advertising revenue.

Source
Kakao Work: How does it differ from KakaoTalk?

KakaoTalk is a consumer messenger on personal accounts. Kakao Work is an administered tenant with an organisation chart, retention controls and approvals, in a near-identical interface.

Kakao Work: What does it actually cost?

From 2,400 KRW per user per month on annual billing for Mini, up to 9,900 KRW for Premium, all excluding 10 percent VAT, under the plan structure effective July 2026.

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