Accounting & Finance · head to head
Adyen vs Outlook Calendar

Adyen
Accounting & Finance
The payments platform built for growth
- From
- $29/month
- Rated
- -

Outlook Calendar
Calendar & Time Management
Professional calendar management for Microsoft 365
- From
- Free
- Rated
- -
The short version
- Only Outlook Calendar has a free tier, so it costs nothing to try first.
- Each has a real cost: Adyen there is a minimum monthly invoice, set by industry and business model and only disclosed through the sales team, so small volumes are not economic; Outlook Calendar offline support limited to only past 30 days of events, older events unavailable
- They diverge on capability: Adyen covers Payment processing, Outlook Calendar covers Meeting scheduling.
Where they differ
Only the attributes on which Adyen and Outlook Calendar actually diverge.
| Attribute | Adyen | Outlook Calendar |
|---|---|---|
| Starting price | $29/month | Free |
| Pricing model | usage-based | Unknown |
| Free tier | No | Yes |
| Platforms | Web, Api, Pos | Web, Windows, macOS, iOS, Android |
| Category | Accounting & Finance | Calendar & Time Management |
| Founded | 2006 | 1975 |
Identical on both: user rating (Not yet rated).
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 Adyen
- Payment processing
- Risk management
- Unified commerce
- Issuing
- Platform payments
- SAP
- Salesforce
- Oracle
Only in Outlook Calendar
- Meeting scheduling
- Shared calendars
- Room booking
- Availability sharing
- Recurring events
- Microsoft Teams
- OneDrive
- SharePoint
Both cover
- Web support
What people use each for
The jobs each tool is most often brought in to do.
Adyen
- Card acquiring with interchange plus pricing for larger merchantsnot Outlook Calendar
- Accepting local payment methods across multiple countriesnot Outlook Calendar
- Settling in several currencies through linked bank accountsnot Outlook Calendar
- Unified online and in-person paymentsnot Outlook Calendar
Outlook Calendar
- Schedulingnot Adyen
- Appointment bookingnot Adyen
- Time trackingnot Adyen
- Resource managementnot Adyen
- Team coordinationnot Adyen
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Adyen
- There is a minimum monthly invoice, set by industry and business model and only disclosed through the sales team, so small volumes are not economic
- Published fees are indicative rather than a rate card, with real pricing negotiated
- Interchange++ means the card cost varies per transaction rather than being a single predictable percentage
- Alternative payment methods carry their own rates on top, such as 3.3 percent plus $0.10 for American Express in North America
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
Adyen
$29/month- CustomFree
- Payment processing
- Risk management
- Unified commerce
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 Adyen if
- You need payment processing.
- You work on Web, Api, Pos.
- You also want risk management.
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 Adyen or Outlook Calendar better?
- Neither clearly leads. Adyen starts at $29/month and Outlook Calendar at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Adyen or Outlook Calendar?
- Outlook Calendar has a free tier; the other does not. Paid plans start at $29/month for Adyen and Free for Outlook Calendar.
- Does Adyen or Outlook Calendar run on more platforms?
- Adyen runs on Web, Api, Pos. Outlook Calendar runs on Web, Windows, macOS, iOS, Android.
- Can I use Outlook Calendar for free?
- Yes. Outlook Calendar has a free tier, so you can try it without paying. Adyen starts at $29/month.
- What is Adyen best used for?
- Adyen is most often used for card acquiring with interchange plus pricing for larger merchants, accepting local payment methods across multiple countries, settling in several currencies through linked bank accounts, unified online and in-person payments. Of those, card acquiring with interchange plus pricing for larger merchants and accepting local payment methods across multiple countries are not what Outlook Calendar is typically brought in for.
- What can Adyen do that Outlook Calendar cannot?
- Adyen covers Payment processing, Risk management, Unified commerce, Issuing. Outlook Calendar covers Meeting scheduling, Shared calendars, Room booking, Availability sharing. Both handle Web 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
Other head to heads
- Adyen vs QuickBooks
- Adyen vs Ramp
- Adyen vs Airbase
- Adyen vs Melio
- Adyen vs Wise Business
- Adyen vs ADP
- Adyen vs Brex
- Adyen vs Expensify
- Adyen vs Fyle
- Adyen vs Payoneer
- Adyen vs Pleo
- Adyen vs Sage 50
- Adyen vs SAP Concur
- Adyen vs Spendesk
- Adyen vs Stampli
- Adyen vs Tipalti
- Adyen vs Xero
- Adyen vs Zoho Books
- Adyen vs Google Calendar
- Adyen vs Apple Calendar
- Adyen vs Fantastical
- Adyen vs Clockify
- Adyen vs Microsoft To Do
- Adyen vs OmniFocus
- Adyen vs Amie
- Adyen vs Float
- Adyen vs Google Tasks
- Adyen vs YouCanBook.me
- Adyen vs Cron Calendar
- Adyen vs Harvest Forecast
- Adyen vs Resource Guru
- Adyen vs SavvyCal
- Adyen vs Skedda
- Adyen vs Timepage
- Adyen vs Woven
- Adyen vs Assistant.to
- Outlook Calendar vs QuickBooks
- Outlook Calendar vs Ramp
- Outlook Calendar vs Airbase
- Outlook Calendar vs Melio
- Outlook Calendar vs Wise Business
- Outlook Calendar vs ADP
- Outlook Calendar vs Brex
- Outlook Calendar vs Expensify
- Outlook Calendar vs Fyle
- Outlook Calendar vs Payoneer
- Outlook Calendar vs Pleo
- Outlook Calendar vs Sage 50
- Outlook Calendar vs SAP Concur
- Outlook Calendar vs Spendesk
- Outlook Calendar vs Stampli
- Outlook Calendar vs Tipalti
- Outlook Calendar vs Xero
- Outlook Calendar vs Zoho Books
- Outlook Calendar vs Google Calendar
- Outlook Calendar vs Apple Calendar
- Outlook Calendar vs Fantastical
- Outlook Calendar vs Clockify
- Outlook Calendar vs Microsoft To Do
- Outlook Calendar vs OmniFocus
- Outlook Calendar vs Amie
- Outlook Calendar vs Float
- Outlook Calendar vs Google Tasks
- Outlook Calendar vs YouCanBook.me
- Outlook Calendar vs Cron Calendar
- Outlook Calendar vs Harvest Forecast
- Outlook Calendar vs Resource Guru
- Outlook Calendar vs SavvyCal
- Outlook Calendar vs Skedda
- Outlook Calendar vs Timepage
- Outlook Calendar vs Woven
- Outlook Calendar vs Assistant.to
