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Communication · head to head

Flock vs LINE WORKS

Flock logo

Flock

Communication

Organized team communication platform

From
Free
Rated
-
Full reviewWebsite
LINE WORKS logo

LINE WORKS

Communication

Business chat built on the LINE interface, aimed at Japanese firms whose staff and customers already use LINE

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Flock the Starter plan only makes the most recent 10,000 messages searchable and caps public channels at 10; LINE WORKS the external LINE bridge, which is the main reason to choose it, only matters where LINE has consumer penetration, so buyers outside Japan, Taiwan and Thailand are paying for a feature they cannot use.
  • They diverge on capability: Flock covers Team chat, LINE WORKS covers External LINE messaging.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Flock and LINE WORKS actually diverge.

Attributes where Flock and LINE WORKS differ
AttributeFlockLINE WORKS
Pricing modelsubscriptionPer user per month
PlatformsWeb, Windows, Macos, Ios, AndroidWeb, iOS, Android, Windows, macOS
Founded2014Unknown

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 Flock

  • Team chat
  • Channels
  • Threads
  • File sharing
  • Polls
  • Integrations
  • Mobile apps
  • Slack

Only in LINE WORKS

  • External LINE messaging
  • Chat and channels
  • Voice and video calls
  • Shared address book
  • Calendar and bulletin board
  • Drive
  • Business email
  • Admin controls

What people use each for

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

Flock

  • Team messaging with channels, direct messages and file sharingnot LINE WORKS
  • Running polls, to-dos and reminders inside a chat workspacenot LINE WORKS
  • Video conferencing and screen sharing for small teamsnot LINE WORKS

LINE WORKS

  • A Japanese retail or service chain whose customers expect to book and enquire over LINE rather than emailnot Flock
  • A clinic, dealership or estate agency that needs customer conversations on LINE but under corporate retention and auditnot Flock
  • A Japanese SME under 30 staff that wants managed business chat at no licence cost on the free tiernot Flock
  • The Japanese subsidiary of a foreign group that needs a local tool for front-line staff alongside the group standardnot Flock

Where each one falls short

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

Flock

  • The Starter plan only makes the most recent 10,000 messages searchable and caps public channels at 10
  • Starter storage is 5 GB for the entire team, against 10 GB per member on Pro and 20 GB per member on Enterprise
  • Starter allows a single team admin and a single approved domain
  • Group video calls and screen sharing require the Pro plan; Starter is limited to 1-1 video calls
  • Group video calls are capped at 20 participants even on Enterprise
  • Single Sign-On and Active Directory sync are Enterprise only
  • Enterprise is quote only, with no published rate, and is positioned for organisations with 100 or more members
  • Unlimited auto-join and announcement channels require Enterprise; Starter and Pro get one of each

LINE WORKS

  • The external LINE bridge, which is the main reason to choose it, only matters where LINE has consumer penetration, so buyers outside Japan, Taiwan and Thailand are paying for a feature they cannot use.
  • The free tier caps total storage at 5GB across the whole organisation, not per user, so a team sharing photos or documents exhausts it within weeks and is pushed onto a paid plan.
  • Business email is only on the Advanced plan at 800 yen per user, so an organisation wanting both chat and mail pays nearly double the Standard rate for every seat including staff who only chat.
  • Developer documentation, support and the integration catalogue are strongest in Japanese, which makes it awkward to administer from a non-Japanese IT function.
  • It has no serious developer or engineering workflow story, so organisations that also run Slack or Teams for technical teams end up maintaining two chat systems and two directories.

Pricing, plan by plan

Flock

Free
  • FreeFree
    • Unlimited chats
    • Channels
    • File sharing
  • Pro$5/month
    • Everything in Free
    • Advanced search
    • API access

LINE WORKS

Free
  • FreeFree
    • Up to 30 users
    • 5GB total storage
    • Chat, calls, calendar and address book
  • Standard$450/month
    • Unlimited users
    • 1TB shared storage
    • Annual contract price, 540 yen monthly
  • Advanced$800/month
    • Everything in Standard
    • Business email
    • 100TB shared storage

Which should you pick?

Choose Flock if

  • You need team chat.
  • You want to start without paying.
  • You work on Web, Windows, Macos, Ios, Android.
  • You also want channels.
Flock review

Choose LINE WORKS if

  • You need external line messaging.
  • You want to start without paying.
  • You work on Web, iOS, Android, Windows, macOS.
  • You also want chat and channels.
LINE WORKS review

Questions people ask

Is Flock or LINE WORKS better?
Neither clearly leads. Flock starts at Free and LINE WORKS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flock or LINE WORKS?
Flock starts at Free and LINE WORKS at Free.
Does Flock or LINE WORKS run on more platforms?
Flock runs on Web, Windows, Macos, Ios, Android. LINE WORKS runs on Web, iOS, Android, Windows, macOS.
Can I use Flock for free?
Both have a free tier, so you can try either at no cost before committing.
What is Flock best used for?
Flock is most often used for team messaging with channels, direct messages and file sharing, running polls, to-dos and reminders inside a chat workspace, video conferencing and screen sharing for small teams. Of those, team messaging with channels, direct messages and file sharing and running polls, to-dos and reminders inside a chat workspace are not what LINE WORKS is typically brought in for.
What can Flock do that LINE WORKS cannot?
Flock covers Team chat, Channels, Threads, File sharing. LINE WORKS covers External LINE messaging, Chat and channels, Voice and video calls, Shared address book.

Answered from the vendors’ own pages

Flock: Does Flock offer a free plan?

Yes, Flock's Starter plan is free and supports teams with 1-20 members, including 10,000 searchable messages and 5 GB storage.

Source
LINE WORKS: Can LINE WORKS really message ordinary LINE users?

Yes. That is its core differentiator and the reason Japanese customer-facing businesses buy it.

Flock: What does Flock's Pro plan include?

The Pro plan supports teams with 20-100 members and offers unlimited messages, 10 GB per team member storage, and a 30-day free trial with no credit card required.

Source
LINE WORKS: Is there a free plan?

Yes, up to 30 users with 5GB of total organisation storage.

Flock: How does Flock charge for external guests?

External guests are free for 90 days from date of invitation. After 90 days, guests are charged at the same rate as other team members.

Source
LINE WORKS: Does the Standard plan include email?

No. Business email is Advanced only, at 800 yen per user per month on an annual contract.

LINE WORKS: Is it worth buying outside Japan?

Generally no. Without the consumer LINE bridge it competes poorly against Slack, Teams or Lark on features and ecosystem.

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