Best Sync Calendar Apps

250+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated November 2026

With an average user rating of 4.6★, the sync calendar category is one of the App Store's strongest. Browse all 250+ apps we track, sorted so the most loved ones surface first.

Compare top Sync Calendar Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1One CalendarOne CalendarFree4.8★ (21K)NoYesNov 2026
2Cozi Family OrganizerCozi Family OrganizerFree4.8★ (403K)YesYesNov 2026
3TimeTree: Shared CalendarTimeTree: Shared CalendarFree4.9★ (94K)YesYesNov 2026
4Google Calendar: Get OrganizedGoogle Calendar: Get OrganizedFree4.5★ (133K)NoYesNov 2026
5CalMirror: Multi Calendar SyncCalMirror: Multi Calendar SyncFree—YesYesAug 2026
6N Calendar - Planner & AgendaN Calendar - Planner & AgendaFree4.7★ (105)YesYesNov 2026
7SAI: Shared Group CalendarSAI: Shared Group CalendarFree—NoNoMay 2026
8FamSynch: AI Family CalendarFamSynch: AI Family CalendarFree—NoYesSep 2026

Top Picks for Sync Calendar

One Calendar#1

One Calendar by Code Spark

All calendars in ONE place!
Editor's Choice
📊 Productivity
4.8😊(21K ratings)
FreeIn-App Purchases
One Calendar screenshot 1
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One Calendar screenshot 6

Consolidate all your calendars from various providers into a single, easy-to-read view. Manage appointments, events, and birthdays efficiently across all your devices. Offers a clean interface for seamless organization.

What We Love

  • 🚀 Easy to use
  • 👍 Clean and simple interface
  • 👍 Integrates multiple calendars
  • 🚀 Syncs across devices
  • 👍 Customizable colors and themes
  • 👍 Helpful for organizing schedules

Room to Improve

  • 🐛 Syncing issues
  • 🐛 Bugs and glitches
  • 🔒 Lacks security features
  • 🔋 Drains battery
  • 👎 Restrictive features in free version
Cozi Family Organizer#2

Cozi Family Organizer by Cozi

Shared Calendar & To-Do Lists
Strong Contender
📊 Productivity
4.8😊(403K ratings)
FreeAdsIn-App Purchases
#78in Productivity
Cozi Family Organizer screenshot 1
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Cozi Family Organizer screenshot 6

This app simplifies family life with a shared calendar, to-do lists, and grocery lists. It helps organize schedules, plan meals, and keep everyone informed. Features include real-time updates and recipe organization.

What We Love

  • 👍 Great family organizer
  • 🚀 Helpful for staying organized
  • 💡 Useful for meal planning and grocery lists
  • 👍 Easy to use and share calendars
  • 👍 Convenient for busy families

Room to Improve

  • 💰 Expensive subscription
  • 🐛 Glitches and bugs
  • 🔍 Limited free version
  • 🔍 Confusing calendar layout
  • 🔍 Difficult to delete items
TimeTree: Shared Calendar#3

TimeTree: Shared Calendar by TimeTree, Inc.

Make a Shared Calendar
Worth Considering
📊 Productivity
4.9😊(94K ratings)
FreeAdsIn-App Purchases
#80in Productivity
TimeTree: Shared Calendar screenshot 1
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Easily share calendars with family, partners, or colleagues to coordinate schedules, manage events, and stay organized. Features include shared albums, memos, to-do lists, and in-event chat for seamless communication.

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

More Sync Calendar apps to explore

FAQ about Sync Calendar

What are the best sync calendar apps for iPhone?
One Calendar tops our sync calendar apps ranking as of November 2026, with a 4.8-star average from 21K App Store ratings, and it's free to download.
Yes — 19 of the top sync calendar apps we rank are free to download, including One Calendar and Cozi Family Organizer.
One Calendar has no ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 250+ sync calendar apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.