Software · head to head
Flock vs Outlook Calendar

Outlook Calendar
Software
Professional calendar management for Microsoft 365
- From
- Free
- Rated
- -
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; Outlook Calendar offline support limited to only past 30 days of events, older events unavailable
- They diverge on capability: Flock covers Team chat, Outlook Calendar covers Meeting scheduling.
Where they differ
Only the attributes on which Flock and Outlook Calendar actually diverge.
| Attribute | Flock | Outlook Calendar |
|---|---|---|
| Pricing model | subscription | Unknown |
| Founded | 2014 | 1975 |
Identical on both: starting price (Free), free tier (Yes), platforms (Web, Windows, Macos, Ios, Android), user rating (Not yet rated), category (Unknown).
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
- Zapier
Only in Outlook Calendar
- Meeting scheduling
- Shared calendars
- Room booking
- Availability sharing
- Recurring events
- Microsoft Teams
- OneDrive
- SharePoint
Both cover
- Slack
- Web support
- Windows support
- Macos support
- Ios support
- Android support
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 Outlook Calendar
- Running polls, to-dos and reminders inside a chat workspacenot Outlook Calendar
- Video conferencing and screen sharing for small teamsnot Outlook Calendar
Outlook Calendar
- Schedulingnot Flock
- Appointment bookingnot Flock
- Time trackingnot Flock
- Resource managementnot Flock
- Team coordinationnot 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
Outlook Calendar
- Offline support limited to only past 30 days of events, older events unavailable
- Shared calendars and group calendars not available offline
- Cached Exchange Mode issues can limit available offline data
- Occasional sync conflicts when coming back online
Pricing, plan by plan
Flock
Free- FreeFree
- Unlimited chats
- Channels
- File sharing
- Pro$5/month
- Everything in Free
- Advanced search
- API access
Outlook Calendar
Free- FreeFree
- Outlook.com email and calendar
- 50MB attachment limit
- 1GB cloud storage
- Microsoft 365 Basic$19.99/year
- Outlook with limited features
- Cloud storage
- Microsoft 365 Personal$99.99/year
- Premium Outlook
- Ad-free email
- 100GB mailbox storage
- Microsoft 365 Business Basic$6/month
- Business-class email
- 1TB cloud storage
- Microsoft Teams
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.
Choose Outlook Calendar if
- You need meeting scheduling.
- You want to start without paying.
- You work on Web, Windows, macOS, iOS, Android.
- You also want shared calendars.
Questions people ask
- Is Flock or Outlook Calendar better?
- Neither clearly leads. Flock starts at Free and Outlook Calendar at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Flock or Outlook Calendar?
- Flock starts at Free and Outlook Calendar at Free.
- Does Flock or Outlook Calendar run on more platforms?
- Flock runs on Web, Windows, Macos, Ios, Android. Outlook Calendar runs on Web, Windows, macOS, iOS, Android.
- 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 Outlook Calendar is typically brought in for.
- What can Flock do that Outlook Calendar cannot?
- Flock covers Team chat, Channels, Threads, File sharing. Outlook Calendar covers Meeting scheduling, Shared calendars, Room booking, Availability sharing. Both handle Slack, Web support, Windows support, Macos support.
Answered from the vendors’ own pages
Outlook Calendar: Is Outlook Calendar free?
Outlook.com with calendar is free via a Microsoft account. Outlook Calendar also comes with Microsoft 365 Personal ($99.99/year), Family ($129.99/year), or Business plans starting at $6/user/month.
SourceOutlook Calendar: Does Outlook Calendar work offline?
Outlook Calendar has limited offline support. New Outlook caches only the past 30 days of calendar items. Shared calendars and group calendars are not supported offline. Changes sync when you reconnect.
SourceOutlook Calendar: What platforms does Outlook Calendar support?
Outlook Calendar is available on Windows (desktop and web), macOS (desktop and web), iOS, and Android. Real-time synchronization works across all devices.
SourceOutlook Calendar: Does Outlook Calendar integrate with Slack?
Yes. Outlook Calendar integrates with Slack to sync your status and receive meeting notifications. You can RSVP to invites directly in Slack and join Microsoft Teams meetings from Slack reminders.
SourceOutlook Calendar: Can you share calendars and set delegate permissions?
Yes. Outlook Calendar supports calendar sharing with delegate permissions, color categories for organization, and the Scheduling Assistant to view attendee availability for meeting times.
SourceRelated pages
More on Outlook Calendar
Keep looking
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