Calendars by Readdle Review 2026: Best Calendar App for Apple Users

Calendars by Readdle is one of the most polished third-party calendar apps for Apple users, blending events and tasks in a single, intuitive view. Here's our updated 2026 review.

What Is Calendars by Readdle?

Calendars by Readdle is a premium calendar and task app for iPhone, iPad, and Mac that combines your schedule and to-do list in one place. It syncs with Google Calendar, iCloud, and Outlook, and offers natural-language event entry, drag-and-drop scheduling, and a clean, modern interface.

Key Features

• Calendar + tasks together: See events and to-dos in one unified view and drag tasks onto your calendar.
• Natural-language input: Type "Lunch with Sam Friday at 1pm" and it creates the event automatically.
• Cross-account sync: Works with Google, iCloud, and Outlook calendars at once.
• Apple ecosystem integration: Native apps for iPhone, iPad, and Mac with widgets and Apple Watch support.
• Clean, customizable views: Day, week, and month layouts that are easy to read.

Is Calendars by Readdle Worth It?

For Apple users who want a better-looking, more capable calendar than the built-in app - especially one that merges tasks and events - Calendars by Readdle is an excellent choice. It's free to use with a subscription unlocking advanced features. For other options, see our guide to the best calendar apps and to-do list apps.