Best Outlook Calendar App

0+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated June 2026

Looking for free outlook calendar app? 18 of our 0+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Outlook Calendar App (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Microsoft OutlookMicrosoft OutlookFree4.8★ (9.2M)YesYesSep 2026
2CalendarCalendarFree4.9★ (1.5M)NoNoSep 2026
3Google Calendar: Get OrganizedGoogle Calendar: Get OrganizedFree4.5★ (132K)NoYesSep 2026
4One CalendarOne CalendarFree4.8★ (21K)NoYesSep 2026
5Microsoft To DoMicrosoft To DoFree4.7★ (265K)NoNoSep 2026
6Microsoft CopilotMicrosoft CopilotFree4.7★ (1.3M)YesYesSep 2026
7Microsoft OneDriveMicrosoft OneDriveFree4.7★ (487K)NoYesSep 2026
8Calendar · Planner & RemindersCalendar · Planner & RemindersFree4.6★ (59K)YesYesSep 2026

Top Picks for Outlook Calendar App

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
📊 Productivity
4.8😐(9.2M ratings)
FreeAdsIn-App Purchases
#7in Productivity
Microsoft Outlook screenshot 1
Microsoft Outlook screenshot 2
Microsoft Outlook screenshot 3
Microsoft Outlook screenshot 4
Microsoft Outlook screenshot 5
Microsoft Outlook screenshot 6

Consolidate all your email accounts and calendars into one streamlined application. Manage your inbox, schedule meetings, and access files from various cloud services. Enhance productivity with AI-powered writing assistance and smart inbox features.

What We Love

  • 🚀 Great for corporate email
  • 👍 Customizable and user-friendly
  • 🚀 Seamless integration with Microsoft 365
  • 👍 Solid email and calendar functionality

Room to Improve

  • 🐛 Buggy and unstable at times
  • 🔋 High battery consumption
  • 🔒 Security issues with password resets
  • 👎 Limited file attachment options
Calendar#2

Calendar by Apple Inc.

Strong Contender
📊 Productivity
4.9😐(1.5M ratings)
Free
Calendar screenshot 1
Calendar screenshot 2
Calendar screenshot 3
Calendar screenshot 4

Organize your entire schedule in one place. View events from multiple accounts, manage tasks, and plan gatherings with others. Stay on top of appointments, holidays, and birthdays with customizable views and shared calendars.

What We Love

  • 🚀 Essential app for staying organized
  • 👍 Clean, intuitive, and easy to navigate
  • 🔒 Seamless sync across devices
  • 👍 Helpful integration with other apps
  • 👍 Ability to set multiple alerts, share events, and color-code calendars

Room to Improve

  • 🐛 Autofill suggestions overwrite event time
  • 🔍 Search function not reliable
  • 🔍 Inability to delete past/declined events
  • 🔍 Confusing interface, cluttered month view
  • 🔍 Lack of customization options for alerts and reminders
Google Calendar: Get Organized#3

Google Calendar: Get Organized by Google

Easily plan & schedule
Worth Considering
📊 Productivity
4.5😊(132K ratings)
FreeIn-App Purchases
#13in Productivity
Google Calendar: Get Organized screenshot 1
Google Calendar: Get Organized screenshot 2
Google Calendar: Get Organized screenshot 3
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Google Calendar: Get Organized screenshot 5
Google Calendar: Get Organized screenshot 6

This official app helps you manage your schedule and stay organized. It automatically adds events from Gmail, syncs across devices, and allows for shared calendars. You can also create tasks, customize views, and integrate with Google Meet for collaboration.

What We Love

  • 🚀 Keeps me organized
  • 🎨 Customizable colors
  • 📅 Integrates with email and other calendars
  • 🔔 Helpful reminders
  • 🤝 Ability to share calendars

Room to Improve

  • 🐛 Crashes and freezes
  • 🕰️ Slow loading times
  • 📆 Date on app icon doesn't change
  • 🔀 Difficulty editing and managing events
  • 🌈 Limited color options

More Outlook Calendar App apps to explore

FAQ about Outlook Calendar App

What is the best outlook calendar app for iPhone?
Microsoft Outlook tops our outlook calendar app ranking as of June 2026, with a 4.8-star average from 9.2M App Store ratings, and it's free to download.
Yes — 18 of the top outlook calendar app we rank are free to download, including Microsoft Outlook and Calendar.
Microsoft Outlook shows ads and offers in-app purchases, according to its App Store listing as of June 2026.
This application consolidates all your email accounts and calendars into a single, convenient location. It helps you manage your inbox, schedule meetings, and access files from various cloud storage services. The app also offers AI-powered features to enhance productivity, such as summarizing long email threads and assisting with writing.
Key features include a smart inbox that sorts messages, quick swipe actions for managing emails, easy sharing of meeting availability, and the ability to find contacts and trips. You can also view and attach files from services like OneDrive and Dropbox without downloading them, and edit Office documents directly within the app.