Best Universal Calendar Converter Apps

Calendars: Schedule Planner

2026 Daily Organizer・Reminder

Free

This app combines a calendar, task manager, daily planner, and habit tracker. It helps users plan their day, build habits, boost productivity, and stay organized with seamless syncing across all Apple devices. Features include event creation, to-do list management, natural language input, and integration with popular meeting platforms.

Google Calendar: Get Organized

Easily plan & schedule

Free

This official app helps you manage your schedule and stay organized. It automatically adds events from Gmail, syncs across devices, and allows for shared calendars. You can also create tasks, customize views, and integrate with Google Meet for collaboration.

Calendar

by Apple

Free

Organize your entire schedule in one place. View events from multiple accounts, manage tasks, and plan gatherings with others. Stay on top of appointments, holidays, and birthdays with customizable views and shared calendars.

One Calendar

All calendars in ONE place!

Free

Consolidate all your digital calendars into a single, easy-to-read view. Manage appointments, events, and birthdays from various providers like Google, Outlook, iCloud, and more, all within one application.

Teamup Calendar

The Shared Calendar for Groups

Free

This app facilitates efficient information sharing and task completion for groups through a shared calendar. It allows for organizing people, scheduling work, managing availability, and securely sharing events with teams or external parties.

Roozegar - روزگار

Roozegar, Persian Calendar

Free

This app provides a comprehensive Persian (Jalali) calendar for iPhone, iPad, and Apple Watch. It includes date conversion tools and multiple widgets for easy access to your schedule. You can also log events directly into your system calendar.

Tiny Calendar: Planner & Tasks

Agenda, Organizer & Reminders

Free

This intuitive calendar app syncs with your existing calendars, offering powerful event creation and management tools. Access your schedule offline, set advanced reminders, and view your events in multiple formats on your iPhone, iPad, and Apple Watch.

Cozi Family Organizer

Shared Calendar & To-Do Lists

Free

This app helps families organize their busy lives with a shared calendar, to-do lists, and recipe box. It keeps everyone on the same page for appointments, shopping, and meal planning, accessible from any device.

24me: Calendar・Planner & To Do

Reminders, Schedule, Organizer

Free

This app acts as a smart personal assistant, consolidating your calendar, to-do lists, notes, and personal accounts into one unified platform. It streamlines daily management with features like voice commands, smart reminders, and email-to-task conversion, helping you stay organized and productive.

Fantastical Calendar

Reminders & Todo List

Free

This powerful calendar and task management app offers intuitive natural language input for event creation, multiple calendar views, and robust task integration. It provides weather forecasts and advanced features like meeting polls and video conferencing integration for premium users.

Simple Calendar・Schedule app

simple and cool calendar app

Free

This app offers a streamlined calendar experience, focusing on essential features for easy event management. It's designed for users who prefer simplicity and a clean interface over complex functionalities. Get organized with core calendar tools and helpful notifications.

Tiny Calendar Pro

Calendar App: Planner & Tasks

$19.99

This intuitive calendar app integrates with all your existing calendars, offering powerful tools for event creation and management. It provides multiple viewing options and offline capabilities, ensuring you never miss an appointment.

Vantage Calendar

Calendar & To-Do List

Free

This app offers a visually engaging way to manage your schedule and to-do lists. It uses colorful cues, stickers, and "stacks" to help you understand your day at a glance. Integrated to-dos can be easily scheduled by dragging and dropping them onto dates.

TimeTree: Shared Calendar

Make a Shared Calendar

Free

This app allows users to create and share calendars with family, friends, or colleagues. It facilitates event planning, communication, and organization through shared schedules, photo albums, and to-do lists. Stay connected and manage your time effectively with this collaborative scheduling tool.

Howbout: shared calendar

For friends, family & couples

Free

This app simplifies social planning by allowing friends to share calendars, coordinate events, and see each other's availability. It helps move plans out of group chats and into a centralized, customizable space with integrated communication features.

Countdown: Event Countdown

Days Until · Calendar & Widget

Free

Easily track important dates and events with a beautifully designed countdown timer and calendar. Set unlimited countdowns, customize with icons and colors, and receive basic reminders. Share your upcoming events with friends and family.

TickTick:To-Do List & Calendar

Task remind, planner,countdown

Free

This app helps you manage tasks, schedule events, and build habits. It offers cross-device synchronization, multiple reminders, and collaboration features. Stay organized and boost productivity with its comprehensive planning tools.