11 Apps ComparedSeptember 2025

Best Calendar Apps for iOS - September 2025

These calendar apps stand out for their seamless integration, advanced features, and user-friendly designs, making them essential tools for managing time effectively in 2025.

Best Calendar Apps for iOS - September 2025

Our Top Pick

The best calendar app for iOS

#1
Calendar by Apple icon

Calendar by Apple

Apple

4.9
1,515,540 ratings

Why It's #1

  • Siri voice commands
  • Family calendar sharing
  • Automatic event suggestions

Screenshots

Calendar by Apple screenshot 1Calendar by Apple screenshot 2Calendar by Apple screenshot 3

About Calendar by Apple

Calendar Plan your time, and coordinate with others using the Calendar app. See a holistic view of your schedule with events from all your different calendar accounts, alongside reminders, holidays, birthdays and subscription calendars. Invite others to events, respond to invitations, or share entire calendars to make plans with colleagues, family, and friends. Your Complete Schedule Keep track of all your events from different calendar accounts together in the Calendar app. Connect accounts from iCloud, Exchange, Google and others. Organize your events using multiple calendars with different colors. And view all your events alongside each other in List, Day, Week or Month views. Event Planning Create and edit events, appointments, and meetings. Add an alert to be reminded of an event, a location to receive a notification when itโ€™s time to leave, a link to a video call to quickly connect, related attachments, notes and more. Easily send and receive events through invitations using iCloud, Exchange and other calendar accounts. Reminders in Calendar Manage your tasks easily with reminders. Create, view, edit and complete reminders from the Reminders app right alongside all your other meetings and appointments in the Calendar app. Shared Calendars Share an iCloud calendar with family, colleagues or friends. They can easily see events, add more events, receive alerts, or make changes to the calendar. Even More Calendars Add other calendars to keep track of even more events. Holiday Calendars show up-to-date information about global holidays. See contactsโ€™ birthdays with the Birthdays calendar. Events recognized by Siri in apps like Mail appear in the Siri Suggestions calendar. And you can even subscribe to calendars for your favorites sports teams, TV shows and more from the web.

Overview

These calendar apps stand out for their seamless integration, advanced features, and user-friendly designs, making them essential tools for managing time effectively in 2025.

Ideal for professionals, students, and families who need to coordinate schedules, set reminders, and stay organized across devices.

We evaluated based on ease of use, feature set, integration capabilities, user reviews, and value for money.

Why Calendar by Apple is Our #1 Pick

Key Reasons:

Deep integration with iOS ecosystem

Free and ad-free experience

Reliable performance and updates

Standout Features:

Siri integration

Family sharing

Holiday and event syncing

"Users appreciate its simplicity and seamless functionality with other Apple services."

- What users love most

Our Recommendations

Best Overall

Calendar by Apple

Seamless integration with iOS, free, and reliable for most users.

๐Ÿ’š Best Free

Google Calendar: Get Organized

Offers advanced features like AI and customization at no cost.

๐Ÿ’Ž Best Premium

Todoist: To Do List & Calendar

Premium version enhances task and habit tracking for productivity enthusiasts.

Easiest to Use

Calendar by Apple

Intuitive design and native iOS support make it beginner-friendly.

Most Innovative

Google Calendar: Get Organized

Leads with AI-driven features and smart visualizations.

The 11 Best calendar Apps

Calendar by Apple icon
1

Calendar by Apple

by Appleโ˜…4.9/5(1,515,540 reviews)Free
Best for:Users deeply embedded in the Apple ecosystem

Pros:

  • Free with no ads
  • Excellent Siri and Apple ecosystem integration
  • Supports multiple calendar accounts

Cons:

  • Limited customization options
  • Basic features compared to third-party apps
Key Features:Siri voice commands, Family calendar sharing, Automatic event suggestions

The default choice for iOS users, offering robust integration and ease of use.

Google Calendar: Get Organized icon
2

Google Calendar: Get Organized

by Googleโ˜…4.5/5(126,645 reviews)Free
Best for:Users who rely on Google services and need advanced features

Pros:

  • Free with robust features
  • AI-powered event creation and visuals
  • Works well across devices

Cons:

  • Can be overwhelming for beginners
  • Privacy concerns with data handling
Key Features:Smart suggestions, Multiple calendar views, Integration with Gmail and Tasks

A powerful, cross-platform app loved for its AI features and customization.

User Sentiment: Users praise its ease of use and AI enhancements, though some desire more color options.
Microsoft Outlook icon
3

Microsoft Outlook

by Microsoft Corporationโ˜…4.8/5(8,289,109 reviews)Free
Best for:Professionals and businesses using Microsoft 365

Pros:

  • Free with seamless Microsoft integration
  • Feature-rich for business use
  • Good for team collaboration

Cons:

  • Can be resource-intensive
  • Steeper learning curve
Key Features:Focused inbox, Meeting scheduling tools, Integration with Office apps

A comprehensive app that combines email and calendar for productivity enthusiasts.

User Sentiment: Users find it easy to use and beneficial for business growth.
Gmail - Email by Google icon
4

Gmail - Email by Google

by Googleโ˜…4.7/5(2,351,723 reviews)Free
Best for:Users who want email and calendar in one app

Pros:

  • Free and secure
  • Real-time notifications
  • Good search functionality

Cons:

  • Calendar is secondary to email
  • Limited compared to dedicated calendar apps
Key Features:Gemini AI features, Multiple account support, Spam protection

Primarily an email app with solid calendar features for Gmail users.

User Sentiment: Users enjoy the notifications and new features, though some reviews are off-topic.
Clue Period & Cycle Tracker icon
5

Clue Period & Cycle Tracker

by BioWink GmbHโ˜…4.8/5(380,755 reviews)Free
Best for:Individuals tracking menstrual cycles and health

Pros:

  • Free with optional paid features
  • Gender-neutral language
  • Strong privacy protections

Cons:

  • Niche focus not for general calendar use
  • Subscription needed for advanced features
Key Features:Cycle predictions, HRT and pregnancy tracking, Educational content

A specialized app for menstrual and health tracking with a focus on privacy.

User Sentiment: Users love its inclusivity, privacy, and helpfulness for health tracking.
Period Tracker Period Calendar icon
6

Period Tracker Period Calendar

by ABISHKKING LIMITEDโ˜…4.9/5(158,318 reviews)Free
Best for:Women seeking reliable period and ovulation tracking

Pros:

  • Free with high user trust
  • Comprehensive tracking features
  • Large user base

Cons:

  • Ads in free version
  • Not a general-purpose calendar
Key Features:Ovulation calculator, Pregnancy mode, Symptom logging

A popular period tracking app trusted by millions for its accuracy.

Period Tracker and Calendar icon
7

Period Tracker and Calendar

by SimpleInnovation LLCโ˜…4.8/5(49,236 reviews)Free
Best for:Beginners in cycle tracking

Pros:

  • Free and user-friendly
  • Customizable tracking
  • No complex features

Cons:

  • Limited to health tracking
  • May not sync with other calendars
Key Features:Simple interface, Fertility insights, Reminder system

An easy-to-use app for menstrual cycle management with elegant design.

Todoist: To Do List & Calendar icon
8

Todoist: To Do List & Calendar

by Doist Inc.โ˜…4.8/5(119,290 reviews)Free
Best for:Users who prioritize task management over pure calendaring

Pros:

  • Free with powerful task features
  • Cross-platform sync
  • Habit tracking

Cons:

  • Calendar is secondary to tasks
  • Premium needed for full features
Key Features:Task prioritization, Team collaboration, Natural language input

A task manager with calendar integration for productivity-focused users.

TimeTree: Shared Calendar icon
9

TimeTree: Shared Calendar

by TimeTree, Inc.โ˜…4.9/5(77,041 reviews)Free
Best for:Groups and families coordinating schedules

Pros:

  • Free and great for sharing
  • Real-time updates
  • Customizable views

Cons:

  • Can be slow with many users
  • Limited individual features
Key Features:Multi-user editing, Event details visible without zooming, Notification system

Excellent for shared calendars with friends and family, emphasizing collaboration.

User Sentiment: Users praise its reliability and ease of use for group coordination.
Calendars: Schedule Planner icon
10

Calendars: Schedule Planner

by Readdle Technologies Limitedโ˜…4.7/5(114,740 reviews)Free
Best for:Apple users wanting an integrated planner

Pros:

  • Free with comprehensive features
  • Seamless Apple device integration
  • Habit tracking included

Cons:

  • Can feel cluttered
  • Some features require learning
Key Features:Task management, Daily planning tools, Apple Watch support

An all-in-one app combining calendar, tasks, and habits for Apple users.

Yahoo Mail icon
11

Yahoo Mail

by Yahooโ˜…4.7/5(4,284,639 reviews)Free
Best for:Users with Yahoo email accounts

Pros:

  • Free and simple
  • Fast and secure
  • Good for email management

Cons:

  • Calendar is very basic
  • Not a dedicated calendar app
Key Features:Integrated mail and calendar, Spam filtering, News integration (though criticized)

Primarily an email app with basic calendar features, best for Yahoo users.

User Sentiment: Mixed reviews, with some praising email service but noting issues with news censorship.

Comparison Insights

Key Differences

Apps vary from general-purpose (e.g., Apple Calendar) to specialized (e.g., Clue), with differences in sharing capabilities and AI features.

How to Choose

Consider ecosystem compatibility, need for sharing, advanced features, and whether health tracking is required.

Common Limitations

Most apps struggle with cross-platform sync outside their ecosystem, and free versions may have ads or limited features.

Emerging Trends

Increased use of AI for smart scheduling, enhanced privacy features, and more integration with health and productivity tools.

Key Insights

Integration with ecosystems is crucial; specialized apps excel in niches like health tracking; free options often suffice for basic needs.

Buying Guide

Essential Features

  • โ€ขSync across devices
  • โ€ขReminder and notification system
  • โ€ขSupport for multiple calendars

Nice to Have

  • โ€ขAI suggestions
  • โ€ขHealth tracking integration
  • โ€ขCustomizable views

โš ๏ธ Red Flags

  • โ€ขPoor privacy policies
  • โ€ขFrequent crashes
  • โ€ขHidden costs in free versions

Pricing Expectations

Most apps are free with optional subscriptions around $3-10/month for advanced features.

Frequently Asked Questions

What is the best calendar app for iPhone?

Calendar by Apple is best for iOS integration, while Google Calendar offers more features for cross-platform users.

How do I choose between free and paid calendar apps?

Start with free apps; upgrade to paid if you need advanced features like AI, no ads, or enhanced sharing.

Is there a learning curve for these apps?

Most are user-friendly, but apps like Microsoft Outlook may require some time to master all features.

Conclusion

The top calendar apps for iOS in 2025 offer a range of options from basic scheduling to advanced health and task integration, with strong emphasis on ecosystem compatibility.

After careful comparison, the key differentiators in this category are: Apps vary from general-purpose (e.g., Apple Calendar) to specialized (e.g., Clue), with differences in sharing capabilities and AI features.

Our Final Recommendation

Choose based on your primary needs: Apple Calendar for simplicity, Google Calendar for features, or specialized apps like Clue for health tracking.

๐Ÿ”ฎ

What We're Hoping to See in the Future

Expect more AI integration, improved privacy, and deeper cross-app functionality in upcoming updates.

Current Trends: Increased use of AI for smart scheduling, enhanced privacy features, and more integration with health and productivity tools.

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