Best Outlook Calendar Apps

203+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated April 2026

With an average user rating of 4.7โ˜…, the outlook calendar category is one of the App Store's strongest. Browse all 203+ apps we track, sorted so the most loved ones surface first.

Top Picks for Outlook Calendar

Microsoft Outlook#1

Microsoft Outlook by Microsoft Corporation

Secure Email, Calendar & Files
Editor's Choice
๐Ÿ“Š Productivity
4.8๐Ÿ˜(9M ratings)
FreeAdsIn-App Purchases
#8in 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

Get organized and stay connected with our secure email and calendar application. Manage your schedule, emails, and contacts effortlessly on any device. Download now for seamless productivity.

What We Love

  • ๐Ÿš€ Great for corporate email
  • ๐Ÿ‘ Customizable and user-friendly
  • ๐Ÿš€ Seamless integration with Microsoft 365
  • ๐Ÿ‘ Solid email and calendar functionality

Room to Improve

  • ๐Ÿ› Buggy and unstable at times
  • ๐Ÿ”‹ High battery consumption
  • ๐Ÿ”’ Security issues with password resets
Calendar#2

Calendar by Apple Inc.

Strong Contender
๐Ÿ“Š Productivity
4.9๐Ÿ˜(1.5M ratings)
Free
Calendar screenshot 1
Calendar screenshot 2
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Calendar screenshot 4

Stay organized and effortlessly manage your schedule with this calendar application. Easily create separate calendars for different aspects of your life, view events across various accounts in one place, and enjoy synchronization across all your devices. Schedule events, receive notifications, and simplify meeting invitations with this all-in-one calendar tool.

What We Love

  • ๐Ÿš€ Essential app for staying organized
  • ๐Ÿ‘ Clean, intuitive, and easy to navigate
  • ๐Ÿ”’ Seamless sync across devices
  • ๐Ÿ‘ Helpful integration with other apps

Room to Improve

  • ๐Ÿ› Autofill suggestions overwrite event time
  • ๐Ÿ” Search function not reliable
  • ๐Ÿ” Inability to delete past/declined events
One Calendar#3

One Calendar by Code Spark

All calendars in ONE place!
Worth Considering
๐Ÿ“Š Productivity
4.8๐Ÿ˜Š(20K ratings)
FreeIn-App Purchases
One Calendar screenshot 1
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Access all your calendars from Google, Outlook, iCloud, and more in one convenient place with easy-to-read overviews and management of appointments and events on all platforms. Simplify your calendar management today!

What We Love

  • ๐Ÿš€ Easy to use
  • ๐Ÿ‘ Clean and simple interface
  • ๐Ÿ‘ Integrates multiple calendars
  • ๐Ÿš€ Syncs across devices

Room to Improve

  • ๐Ÿ› Syncing issues
  • ๐Ÿ› Bugs and glitches
  • ๐Ÿ”’ Lacks security features

More Outlook Calendar apps to explore

4
Microsoft To Do
Microsoft To Do
Microsoft To Do
Capture Tasks & Set Reminders
Free

Capture Tasks, To-Do Lists, and Reminders. Stay organized with this task management app that lets you create lists, set reminders, and prioritize tasks. Collaborate with others and access your lists from any device. Stay on top of your tasks with Microsoft To Do.

๐Ÿ“Š Productivity
(257K)
5
Google Calendar: Get Organized
Google Calendar: Get Organized
Google Calendar: Get Organized
Easily plan & schedule
Free

Stay organized and manage your schedule seamlessly with our calendar application. Sync, schedule, and book appointments with ease. Download now and take control of your time!

๐Ÿ“Š Productivity
(130K)
6
Microsoft OneDrive
Microsoft OneDrive
Microsoft OneDrive
File & photo cloud storage
Free

Store, access, and share your files securely across devices with ease using this cloud-based storage application. Keep all your important documents in one place and access them anytime, anywhere."

๐Ÿ“Š Productivity
(150K)
7
Microsoft 365 Copilot
Microsoft 365 Copilot
Microsoft 365 Copilot
AI-powered productivity
Free

Unlock your productivity with this all-in-one suite of essential office tools. Create documents, analyze data, and design presentations seamlessly with this powerful application suite. Boost your efficiency and streamline your work processes today!

๐Ÿ“Š Productivity
(1.3M)
8
Calendars: Schedule Planner
Calendars: Schedule Planner
Calendars: Schedule Planner
ReminderใƒปTasks OrganizerใƒปTo Do
Free

Plan your day, schedule events, set reminders, and stay organized with this versatile calendar and planner app. Manage tasks, appointments, and to-do lists easily in one place. Download now and take control of your schedule!

๐Ÿ“Š Productivity
(120K)
9
Microsoft Planner
Microsoft Planner
Microsoft Planner
by Microsoft Corporation
Free

This application requires an Office 365 work or school subscription and provides a visual way to organize teamwork. Users can create plans, assign tasks, share files, chat, and track progress collaboratively across devices. Learn more at the provided link.

๐Ÿ“Š Productivity
(13K)
10
Calendar ยท
Calendar ยท
Calendar ยท
Planner Organizer & Agenda
Free

Plan, organize, and manage your schedule effectively with this all-in-one planner and organizer app. Stay on top of your tasks, events, and appointments effortlessly. Download now to boost your productivity!

๐Ÿ“Š Productivity
(59K)
11
Simple Calendar - SimpleCal
Simple Calendar - SimpleCal
Simple Calendar - SimpleCal
Tasks & ToDo for your schedule
Free

Stay organized and on top of your schedule with a user-friendly calendar app. Easily manage tasks, events, and appointments all in one place. Download now to simplify your life and never miss a beat!

๐Ÿ“Š Productivity
(16K)
12
Gmail - Email by Google
Gmail - Email by Google
Gmail - Email by Google
Secure, fast & organized email
Free

A secure, fast email application by Google that allows you to easily manage your emails, stay organized, and communicate efficiently. Experience seamless email integration with a user-friendly interface. Start managing your emails effortlessly today!

๐Ÿ“Š Productivity
(317K)
13
24me: CalendarใƒปPlanner & To Do
24me: CalendarใƒปPlanner & To Do
24me: CalendarใƒปPlanner & To Do
Reminders, Schedule, Organizer
Free

An intelligent scheduling app that combines calendar, tasks, notes, and personal accounts in one place, allowing users to manage their daily activities efficiently. Stay organized, save time, and streamline your life with this all-in-one productivity tool.

๐Ÿ“Š Productivity
(6.7K)
14
Teamup Calendar
Teamup Calendar
Teamup Calendar
The Shared Calendar for Groups
Free

Teamup Calendar is a shared calendar application for groups that helps organize people, schedule work, and share events efficiently. It offers multiple sub-calendars, customizable fields, event attachments, and powerful timezone support. Visit https://www.teamup.com to get started and learn more.

๐Ÿ’ผ Business
(1.5K)
15
Awesome Calendar 2
Awesome Calendar 2
Awesome Calendar 2
reminders, note & planner app
Free

Access a powerful calendar app with intuitive interfaces for setting reminders, taking notes, and managing schedules effortlessly. Stay organized and productive on-the-go. Download now to enhance your daily efficiency.

๐Ÿ“Š Productivity
(4.8K)
16
Mail: Email, Cloud, Calendar
Mail: Email, Cloud, Calendar
Mail: Email, Cloud, Calendar
Tackle your inbox email!
Free

An efficient and versatile mail app for iPhone, iPad, and iPod Touch supporting various email services with features like multiple account support, full synchronization, personalized spam filter, push notifications, mail caching, contact integration, and quick actions. Stay connected and organized with this user-friendly email application.

๐Ÿ“Š Productivity
(1.7M)
17
Fantastical Calendar
Fantastical Calendar
Fantastical Calendar
Reminders & Todo List
Free

Organize your events seamlessly with an intuitive calendar app that syncs across devices and allows for easy scheduling and reminders. Stay on top of your tasks and events effortlessly.

๐Ÿ“Š Productivity
(23K)
18
Tiny Calendar: Planner & Tasks
Tiny Calendar: Planner & Tasks
Tiny Calendar: Planner & Tasks
Agenda, Organizer & Reminders
Free

Stay organized and on top of your schedule with this intuitive planner app. Easily manage your events, tasks, and appointments all in one place. Download now to simplify your day-to-day planning!

๐Ÿ“Š Productivity
(20K)
19
PocketLife Calendar
PocketLife Calendar
PocketLife Calendar
Calendar Organizer & Reminders
Free

PocketLife Calendar is a versatile calendar organizer that helps you stay organized and never miss an important event. Manage your schedule effectively with ease. Download now for effortless event planning!

๐Ÿ“Š Productivity
(41K)
20
Vimcal: Calendar and Schedule
Vimcal: Calendar and Schedule
Vimcal: Calendar and Schedule
Work calendar for busy people
Free

Discover the ultimate AI-powered calendar app for remote workers and teams - revolutionize your scheduling with superpowers for Google and Outlook calendars, deep focus mode, time zone assistance, drag-and-copy availability, and more! Upgrade your productivity now with Vimcal - download to streamline your workday!

๐Ÿ“Š Productivity
(452)

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