Softwr

Software · head to head

Outlook Calendar vs Trello

Outlook Calendar logo

Outlook Calendar

Software

Professional calendar management for Microsoft 365

From
Free
Rated
-
Full reviewWebsite
Trello logo

Trello

Software

Organize anything, together

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Outlook Calendar offline support limited to only past 30 days of events, older events unavailable; Trello free tier limited to 10 boards and 10 collaborators per workspace
  • They diverge on capability: Outlook Calendar covers Meeting scheduling, Trello covers Kanban boards.

Where they differ

Only the attributes on which Outlook Calendar and Trello actually diverge.

Attributes where Outlook Calendar and Trello differ
AttributeOutlook CalendarTrello
PlatformsWeb, Windows, macOS, iOS, AndroidWeb, Ios, Android, Windows, Macos
Founded19752011

Identical on both: starting price (Free), pricing model (Unknown), free tier (Yes), 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 Outlook Calendar

  • Meeting scheduling
  • Shared calendars
  • Room booking
  • Availability sharing
  • Recurring events
  • Microsoft Teams
  • OneDrive
  • SharePoint

Only in Trello

  • Kanban boards
  • Cards & lists
  • Drag-and-drop interface
  • Activity feed
  • Due dates & reminders
  • File attachments
  • Comments & mentions
  • Power-Ups ecosystem

Both cover

  • Slack

What people use each for

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

Outlook Calendar

  • Schedulingnot Trello
  • Appointment bookingnot Trello
  • Time trackingnot Trello
  • Resource managementnot Trello
  • Team coordinationnot Trello

Trello

  • Project trackingnot Outlook Calendar
  • Content calendarsnot Outlook Calendar
  • Sales pipelinesnot Outlook Calendar
  • Onboarding processesnot Outlook Calendar
  • Personal task managementnot Outlook Calendar

Where each one falls short

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

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

Trello

  • Free tier limited to 10 boards and 10 collaborators per workspace
  • Free tier automation capped at 250 monthly Butler runs
  • No offline access; web-based platform requires internet connection
  • Advanced views (timeline, table, dashboard) not available on Standard plan
  • SSO only available on Enterprise plan

Pricing, plan by plan

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

Trello

Free
  • FreeFree
    • Up to 10 boards/workspace
    • Up to 10 collaborators
    • 250 monthly Butler automation runs
  • Standard$5/user/month
    • Unlimited boards
    • Unlimited Power-Ups
    • 1,000 monthly Butler runs
  • Premium$10/user/month
    • All Standard features
    • Timeline, table, dashboard, calendar views
    • Unlimited automation
  • Enterprise$17.5/user/month
    • All Premium features
    • Unlimited workspaces
    • SSO and user provisioning

Which should you pick?

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.
Outlook Calendar review

Choose Trello if

  • You need kanban boards.
  • You want to start without paying.
  • You work on Web, Ios, Android, Windows, Macos.
  • You also want cards & lists.
Trello review

Questions people ask

Is Outlook Calendar or Trello better?
Neither clearly leads. Outlook Calendar starts at Free and Trello at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Outlook Calendar or Trello?
Outlook Calendar starts at Free and Trello at Free.
Does Outlook Calendar or Trello run on more platforms?
Outlook Calendar runs on Web, Windows, macOS, iOS, Android. Trello runs on Web, Ios, Android, Windows, Macos.
Can I use Outlook Calendar for free?
Both have a free tier, so you can try either at no cost before committing.
What is Outlook Calendar best used for?
Outlook Calendar is most often used for scheduling, appointment booking, time tracking, resource management. Of those, scheduling and appointment booking are not what Trello is typically brought in for.
What can Outlook Calendar do that Trello cannot?
Outlook Calendar covers Meeting scheduling, Shared calendars, Room booking, Availability sharing. Trello covers Kanban boards, Cards & lists, Drag-and-drop interface, Activity feed. Both handle Slack.

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.

Source
Trello: What are the free tier limitations for Trello?

Trello Free supports up to 10 boards per workspace, unlimited cards, 250 monthly Butler automation runs, and up to 10 Power-Up attachments. Limited to 10 collaborators per workspace.

Source
Outlook 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.

Source
Trello: What features are included in the Standard plan?

Standard ($5-6/user/month) adds unlimited boards, custom fields, advanced checklists, 1,000 monthly automation runs, list colors, and calendar view access.

Source
Outlook 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.

Source
Trello: Does Trello offer SSO and on which plan?

SSO through Atlassian Guard is included only on the Enterprise plan ($17.50/user/month or $210/year per user).

Source
Outlook 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.

Source
Trello: How many file attachment options are available?

Free tier includes 2 Power-Ups per board, Standard adds unlimited Power-Ups, and Premium and above offer full Power-Up marketplace access with custom integration options.

Source
Outlook 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.

Source
Trello: Is there offline access to Trello boards?

Trello is a web-based application requiring internet connection. Mobile apps are available for iOS and Android but do not support true offline editing.

Source
ShareXLinkedInRedditWhatsAppEmail

Related pages

More on Outlook Calendar

More on Trello

Keep looking

Other head to heads