Best Collaborative Calendar Apps

250+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated October 2026

TimeTree is the household name in collaborative calendar, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Collaborative Calendar Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1TimeTree: Shared CalendarTimeTree: Shared CalendarFree4.9★ (93K)YesYesNov 2026
2Howbout: shared calendarHowbout: shared calendarFree4.8★ (52K)NoYesNov 2026
3Google Calendar: Get OrganizedGoogle Calendar: Get OrganizedFree4.5★ (133K)NoYesNov 2026
4Teamup CalendarTeamup CalendarFree4.8★ (10K)NoNoNov 2026
5Shared Calendar +Shared Calendar +Free—NoYesSep 2026
6Cupla: Couples Shared CalendarCupla: Couples Shared CalendarFree4.7★ (2.3K)NoYesNov 2026
7Simple Calendar・Schedule appSimple Calendar・Schedule appFree4.6★ (2.5K)YesNoNov 2026
8GRUP: Shared Calendar & EventsGRUP: Shared Calendar & EventsFree—NoNoNov 2026

Top Picks for Collaborative Calendar

TimeTree: Shared Calendar#1

TimeTree: Shared Calendar by TimeTree, Inc.

Make a Shared Calendar
Editor's Choice
📊 Productivity
4.9😊(93K ratings)
FreeAdsIn-App Purchases
#74in Productivity
TimeTree: Shared Calendar screenshot 1
TimeTree: Shared Calendar screenshot 2
TimeTree: Shared Calendar screenshot 3
TimeTree: Shared Calendar screenshot 4
TimeTree: Shared Calendar screenshot 5
TimeTree: Shared Calendar screenshot 6

Easily manage schedules with loved ones, colleagues, or groups. Share events, photos, and to-do lists, and communicate directly within event details. Syncs with existing calendars and offers a web version for accessibility.

What We Love

  • 🚀 Easy to use
  • 👍 Shareable calendars
  • 💡 Customizable color coding
  • 🚀 Efficient organization
  • 👍 Helpful for busy families
  • 👍 Great for long-distance relationships
  • 👍 Useful for coordinating schedules
  • 👍 Keeps everyone on the same page

Room to Improve

  • 🐛 Occasional sync issues
  • 🐛 Laggy performance
  • 🐛 Confusing time zone changes
  • 🐛 Limited customization options
  • 🐛 Difficulty importing/exporting data
Howbout: shared calendar#2

Howbout: shared calendar by Howbout Ltd.

For friends, family & couples
Strong Contender
🌐 Social Networking
4.8😊(52K ratings)
FreeIn-App Purchases
#63in Social Networking
Howbout: shared calendar screenshot 1
Howbout: shared calendar screenshot 2
Howbout: shared calendar screenshot 3
Howbout: shared calendar screenshot 4
Howbout: shared calendar screenshot 5
Howbout: shared calendar screenshot 6

Effortlessly coordinate plans with friends, family, and partners. This app simplifies scheduling by showing everyone's availability, centralizing event details, and providing real-time updates. It aims to reduce communication overhead and help you connect with the people who matter most.

What We Love

  • 👍 Easy to use and intuitive
  • 🚀 Helps with planning and organizing
  • 💡 Useful features like polls, countdowns, and event chats
  • 🤝 Facilitates sharing calendars and coordinating with friends

Room to Improve

  • 🐛 Occasional glitches and bugs
  • 🔀 Difficulty syncing with other calendars
  • 📢 Overwhelming notifications
  • 🔒 Forced to add friends to use the app
Google Calendar: Get Organized#3

Google Calendar: Get Organized by Google

Easily plan & schedule
Worth Considering
📊 Productivity
4.5😊(133K ratings)
FreeIn-App Purchases
#19in Productivity
Google Calendar: Get Organized screenshot 1
Google Calendar: Get Organized screenshot 2
Google Calendar: Get Organized screenshot 3
Google Calendar: Get Organized screenshot 4
Google Calendar: Get Organized screenshot 5
Google Calendar: Get Organized screenshot 6

This app helps you manage your schedule and events efficiently. It automatically adds appointments from Gmail, supports multiple calendars, and offers customizable views and widgets. Collaborate with others by sharing calendars and integrating with Google Meet.

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 Collaborative Calendar apps to explore

FAQ about Collaborative Calendar

What are the best collaborative calendar apps for iPhone?
TimeTree: Shared Calendar tops our collaborative calendar apps ranking as of October 2026, with a 4.9-star average from 93K App Store ratings, and it's free to download.
Yes — 20 of the top collaborative calendar apps we rank are free to download, including TimeTree: Shared Calendar and Howbout: shared calendar.
TimeTree: Shared Calendar shows ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ collaborative calendar apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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