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Best Calendar Reminder Apps

228+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated May 2026

From beginner-friendly picks to power-user tools, our calendar reminder list covers 228+ iPhone apps updated through May 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for Calendar Reminder

Calendars: Schedule Planner#1

Calendars: Schedule Planner by Readdle Technologies Limited

Reminder・Tasks Organizer・To Do
Editor's Choice
📊 Productivity
4.7😊(120K ratings)
FreeAdsIn-App Purchases
Calendars: Schedule Planner screenshot 1
Calendars: Schedule Planner screenshot 2
Calendars: Schedule Planner screenshot 3
Calendars: Schedule Planner screenshot 4
Calendars: Schedule Planner screenshot 5
Calendars: Schedule Planner screenshot 6

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.

What We Love

  • 🌟 Excellent calendar app
  • 👍 Easy to use and organize
  • 🎨 Helpful color-coding
  • 📆 Seamless integration with other calendars

Room to Improve

  • 🐛 Occasional glitches and data loss
  • 💰 Concerns over subscription model
  • 🕰️ Cumbersome date/time selection process
Simple Calendar - SimpleCal#2

Simple Calendar - SimpleCal by Yohei Fujikawa

Tasks & ToDo for your schedule
Strong Contender
📊 Productivity
4.7😊(16K ratings)
FreeAdsIn-App Purchases
Simple Calendar - SimpleCal screenshot 1
Simple Calendar - SimpleCal screenshot 2
Simple Calendar - SimpleCal screenshot 3
Simple Calendar - SimpleCal screenshot 4
Simple Calendar - SimpleCal screenshot 5
Simple Calendar - SimpleCal screenshot 6

This app offers a straightforward way to manage your schedule, sync events across devices using iCloud or Google Calendar, and stay organized with reminders and weather forecasts. Its customizable interface and simple design make adding and editing events quick and intuitive.

What We Love

  • 😍 Awesome!!
  • 👍 Easy to use
  • 👍 Well-organized
  • 🎨 Helpful color-coding

Room to Improve

  • 🐛 Deleted events/data loss
  • 🔒 Requires full access to Apple Calendar
  • 🗓️ Can't edit read-only events
Structured: Daily Planner Todo#3

Structured: Daily Planner Todo by unorderly GmbH

Calendar, Reminder & To Do
Worth Considering
📊 Productivity
4.8😊(160K ratings)
FreeIn-App Purchases
#71in Productivity
Structured: Daily Planner Todo screenshot 1
Structured: Daily Planner Todo screenshot 2
Structured: Daily Planner Todo screenshot 3
Structured: Daily Planner Todo screenshot 4
Structured: Daily Planner Todo screenshot 5
Structured: Daily Planner Todo screenshot 6

Organize your day with a visual timeline that integrates your calendar, to-dos, routines, and habits. This app helps users feel calmer, focus faster, and accomplish more daily. It's ideal for work, study, travel, and managing ADHD, offering planning tools and focus timers.

What We Love

  • 🚀 Highly organized and structured
  • 🎨 Customizable colors and icons
  • ⏱️ Visualizes time and task duration
  • 🗓️ Integrates with calendar and reminders

Room to Improve

  • 🕰️ Tedious to change task times
  • 🔀 Difficulty rearranging tasks
  • 🔍 Lack of search for icons

More Calendar Reminder apps to explore

4
Countdown: Event Countdown
Countdown: Event Countdown
Countdown: Event Countdown
Countdown Calendar AI & 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.

Unlimited event countdownsCount up or down to eventsCustomizable icons and colors
📊 Productivity
(24K)
free with in-app purchases
5
Google Calendar: Get Organized
Google Calendar: Get Organized
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.

Automatic event import from GmailCross-device synchronizationShared calendars for collaboration
📊 Productivity
(131K)
free with in-app purchases
6
TickTick:To-Do List & Calendar
TickTick:To-Do List & Calendar
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.

Cross-device task synchronizationMultiple reminders and flexible schedulingCalendar views and integration
📊 Productivity
(44K)
freemium
7
Reminder, Reminders with Voice
Reminder, Reminders with Voice
Reminder, Reminders with Voice
Alarm, Calendar, Remind Me App
Free

Create custom reminders with personalized sounds, including your own voice or music. Schedule recurring events, set wake-up alarms, and add images for easy identification. Manage all your reminders in a convenient calendar view.

Customizable voice and music notification soundsFlexible recurring reminder schedulingWake-up alarm functionality
📊 Productivity
(20K)
free with in-app purchases
8
minical - Planner & Calendar
minical - Planner & Calendar
minical - Planner & Calendar
위젯 지원 및 공유 가능한 간단한 일정 플래너
Free

This app offers a minimalist and intuitive way to manage your schedule. View events at a glance with home and lock screen widgets, color-code them for easy distinction, and quickly edit them with smart suggestions. Stay organized with customizable notifications and cloud syncing.

Minimalist designHome & lock screen widgetsEvent color-coding
📊 Productivity
(5.4K)
free with in-app purchases
9
Tiny Calendar: Planner & Tasks
Tiny Calendar: Planner & Tasks
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.

Natural language input for event creationDrag and drop event editingSyncs with Google Calendar and iOS local calendars
📊 Productivity
(20K)
subscription
10
Calendar Reminder
Calendar Reminder
Calendar Reminder
by 文睿 李
Free
$0.29 | 100% OFF

Easily manage recurring events and daily tasks with a simple interface. Set reminders for birthdays, anniversaries, and important meetings. Never miss an important date or appointment again.

Recurrent event managementDaily task planningBirthday and anniversary reminders
🔧 Utilities
(2)
free with in-app purchases
11
Planner Pro - Daily Planner
Planner Pro - Daily Planner
Planner Pro - Daily Planner
Reminders, Calendar & Tasks
Free

This app helps you manage your daily life by combining events, tasks, and notes in one place. It offers customizable settings for events, tasks with sub-tasks, notes with sketching and audio capabilities, and a focus timer. Organize your schedule with day, week, and month views, and search through all your records.

Event management with iOS calendar syncTask and project management with sub-tasksNotes with sketching and audio support
📊 Productivity
(13K)
free with in-app purchases
12
24me: Calendar・Planner & To Do
24me: Calendar・Planner & To Do
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.

Unified calendar and plannerSmart task manager and to-do listSimple notes and lists
📊 Productivity
(6.7K)
free with in-app purchases
13
Todoist: To Do List & Calendar
Todoist: To Do List & Calendar
Todoist: To Do List & Calendar
Task manager & Reminders
Free

Organize your personal and professional life with this intuitive task manager. Capture ideas naturally, manage projects with flexible views, and collaborate with teams seamlessly. It syncs across all your devices, ensuring nothing falls through the cracks.

Natural language task inputQuick Add functionalityFlexible project views (list, board, calendar)
📊 Productivity
(127K)
freemium
14
Reminder & Countdown
Reminder & Countdown
Reminder & Countdown
Count down to your event
Free

Never miss an important event with this app. Set up custom reminders for everything from birthdays to holidays, with real-time countdowns and configurable alerts. Personalize your events with unique icons, backgrounds, and fonts, and easily share your countdowns with friends and family.

Real-time countdownsCustomizable alertsEvent personalization (icons, backgrounds, fonts)
📊 Productivity
(16K)
free with in-app purchases
15
PocketLife Calendar
PocketLife Calendar
PocketLife Calendar
Calendar Organizer & Reminders
Free

Organize your life with a stylish and intuitive calendar app. It offers powerful customization, seamless syncing with popular services, and natural language event creation. Share events, set reminders, and personalize your calendar views.

Calendar sharing with friends and familyFast sync with Google, Outlook, iCal, Yahoo, iCloudCreate events using natural language
📊 Productivity
(41K)
free with in-app purchases
16
Calendar · Planner & Reminders
Calendar · Planner & Reminders
Calendar · Planner & Reminders
Planner Organizer & Agenda
Free

This app offers a streamlined calendar experience with beautiful, intuitive views of your schedule. It unifies events and reminders, allows for quick natural language event entry, and provides contact history. It supports major calendar services and offers premium features through subscription.

Intuitive day and month viewsUnified events and remindersNatural language event entry
📊 Productivity
(59K)
free with in-app purchases
17
Awesome Calendar 2
Awesome Calendar 2
Awesome Calendar 2
reminders, note & planner app
Free

Enhance your daily schedule with a feature-rich calendar app. Add visual flair with stickers, create checklists and notes with photos, and access your schedule instantly via a widget. Customize themes, icons, and more to personalize your planning experience.

Calendar with notes and checklistsCustomizable stickers and markersLock screen widget for quick access
📊 Productivity
(4.8K)
freemium
18
Week Calendar - Smart Planner
Week Calendar - Smart Planner
Week Calendar - Smart Planner
Sync Agenda Tasks & Reminders
Free

This app offers a highly customizable calendar experience with multiple view options and automation tools. It allows for easy event management, integration with popular calendar services, and includes features like weather forecasts and calendar insights. An optional Pro version unlocks additional widgets and features.

Customizable calendar views (Day, Agenda, Month, Year)Event automation and templatesDrag-and-drop event rescheduling
📊 Productivity
(10K)
free with in-app purchases
19
Reminder with Voice Reminders
Reminder with Voice Reminders
Reminder with Voice Reminders
Alarm, Calendar, Remind Me App
Free

Easily create and manage recurring reminders with custom sounds, including voice recordings or music. Set up hourly, daily, weekly, monthly, or yearly alerts, and a wake-up alarm with adjustable snooze options. Never miss an important event again with this user-friendly reminder app.

Recurring reminders (hourly, daily, weekly, monthly, yearly)Custom voice or music reminder soundsWake-up alarm with snooze
📊 Productivity
(17K)
free with in-app purchases
20
Cute Calendar : Agenda Planner
Cute Calendar : Agenda Planner
Cute Calendar : Agenda Planner
2026 schedule, task & widget
Free

This digital planner helps manage your time and improve productivity with integrated to-do lists, notes, reminders, and habit tracking. Personalize your schedule with stickers and color schemes to balance work and personal life.

Integrated To-Do ListNotes and Diary FunctionalityHabit Tracker
📊 Productivity
(5.9K)
free with in-app purchases

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