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Best Calendar Reminder Event Apps

226+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated July 2026

The best calendar reminder event apps on iPhone average 4.6★ across 226+ titles — we've ranked them by what real users actually keep on their phones. Updated July 2026.

Top Picks for Calendar Reminder Event

Reminder & Countdown#1

Reminder & Countdown by PERSAPPS (PERSEPS), TOO

Count down to your event
Editor's Choice
📊 Productivity
4.8😊(16K ratings)
FreeAds
Reminder & Countdown screenshot 1
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Reminder & Countdown screenshot 5

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.

What We Love

  • 👍 Simple and convenient
  • 👍 Versatile and customizable
  • 👍 Reliable and easy to use
  • 👍 Helpful for organizing important dates

Room to Improve

  • 🐛 Occasional issues with reminders not working as expected
  • 🐛 Reminders sometimes persist even after being deleted
  • 🐛 Sync issues between devices
hip: Birthday Reminder App#2

hip: Birthday Reminder App by Celebrate Labs Inc.

Event Countdown, Age & Widget
Strong Contender
🔧 Utilities
4.7😐(18K ratings)
FreeAdsIn-App Purchases
hip: Birthday Reminder App screenshot 1
hip: Birthday Reminder App screenshot 2
hip: Birthday Reminder App screenshot 3
hip: Birthday Reminder App screenshot 4
hip: Birthday Reminder App screenshot 5
hip: Birthday Reminder App screenshot 6

Never forget important dates like birthdays and anniversaries again. This app helps you celebrate special occasions with customizable reminders, personalized greetings, and gift ideas. Manage your contacts and events with ease, ensuring you always send wishes on time.

What We Love

  • 💡 Helpful for remembering birthdays and anniversaries
  • 👍 Easy to use and organize contacts
  • 🚀 Convenient reminders and notifications
  • 👍 Useful gift suggestion feature

Room to Improve

  • 🔒 Lack of automatic backup or sync options
  • 🐛 Issues with data loss or disappearing birthdays
  • 💰 Restrictive free version, requires paid subscription
Countdown+ Calendar (Lite)#3

Countdown+ Calendar (Lite) by Apps Beyond

Event Reminders Birthday Timer
Worth Considering
🌟 Lifestyle
4.8😐(4.2K ratings)
FreeIn-App Purchases
Countdown+ Calendar (Lite) screenshot 1
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Easily track upcoming events with customizable countdown timers. Set reminders, sync with your device and social media calendars, and add personal touches like images and filters. Never miss a birthday, holiday, or special occasion again.

What We Love

  • 💫 Great countdown app
  • 🎨 Customizable with photos
  • 📆 Integrates with calendar
  • 🔔 Helpful reminders

Room to Improve

  • 🔒 Login/account issues
  • 🚫 Lack of updates/support
  • 💰 Paywall for features

More Calendar Reminder Event apps to explore

4
Countdown App Free (Big Day Event Timer Reminder)
Countdown App Free (Big Day Event Timer Reminder)
Countdown App Free (Big Day Event Timer Reminder)
by JINMIN ZHOU
Free

Track upcoming and past events with a smart reminder app. Count down to special occasions like birthdays and holidays, or reflect on past milestones. Receive timely notifications and customize your experience with various wallpapers and backgrounds.

Count future and past datesDisplay on Notification WidgetSmart reminders
🔧 Utilities
(1.4K)
free with in-app purchases
5
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
6
Birthday Reminder and Calendar
Birthday Reminder and Calendar
Birthday Reminder and Calendar
Anniversary & Event Tracker
Free

Never forget important dates like birthdays and anniversaries again. This app provides timely reminders and helps you organize all your meaningful events in one place, ensuring you stay connected with loved ones.

Import events from contacts, calendar, and FacebookTimely and customizable remindersAdd custom personal events
🔧 Utilities
(121)
free with in-app purchases
7
Calendars: Schedule Planner
Calendars: Schedule Planner
Calendars: Schedule Planner
Reminder・Tasks Organizer・To Do
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.

Calendar, task, and habit managementDaily, weekly, and monthly viewsNatural language event creation
📊 Productivity
(120K)
free with in-app purchases
8
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
9
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
10
Simple Calendar - SimpleCal
Simple Calendar - SimpleCal
Simple Calendar - SimpleCal
Tasks & ToDo for your schedule
Free

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.

Cross-platform sync (iCloud/Google)Event reminders (daily, weekly, monthly, yearly)Weather forecast integration
📊 Productivity
(16K)
free with in-app purchases
11
Reminder & Countdown Pro
Reminder & Countdown Pro
Reminder & Countdown Pro
Count down to your event
$1.99

Organize tasks, projects, and events with a distraction-free interface. Customize alerts, icons, and backgrounds to suit your needs. Sync across devices and secure your data with biometric authentication.

Distraction-free task managementCustomizable event alertsIcon, background, and sound customization
📊 Productivity
(3.2K)
paid
12
Countdown - To Big Event Day
Countdown - To Big Event Day
Countdown - To Big Event Day
Birthday & Vacation Reminders
Free

Track the time remaining until important dates with a visually appealing countdown timer. Set reminders for birthdays, holidays, and other significant events, and personalize your experience with custom backgrounds. Share your excitement with friends and family.

Countdown in seconds, minutes, hours, and daysSupport for multiple countdownsReminder alerts
💼 Business
(126)
free with in-app purchases
13
Cozi Family Organizer
Cozi Family Organizer
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.

Shared family calendarColor-coded schedulingReminders and agenda emails
📊 Productivity
(386K)
free with in-app purchases
14
Fantastical Calendar
Fantastical Calendar
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.

Natural language event and task creationMultiple calendar views (day, week, month, year)Integrated task management (Todoist, Google Tasks)
📊 Productivity
(23K)
freemium
15
Proton Calendar: Secure Events
Proton Calendar: Secure Events
Proton Calendar: Secure Events
Keep your schedule private
Free

This app helps you manage your schedule with privacy in mind. It offers various viewing options, reminders, and recurring event creation. All your data is protected by end-to-end encryption and strict Swiss privacy laws, ensuring your personal information is not tracked or harvested.

Agenda and day viewView and reply to invitesAutomatic event addition from email
📊 Productivity
(1.3K)
free
16
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
17
Vantage Calendar
Vantage Calendar
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.

Visual cues (colors, stickers, book covers)Summarize days with 'Stacks'Integrated to-do lists in notebooks
📊 Productivity
(1.8K)
free with in-app purchases
18
iCalendar
iCalendar
iCalendar
Schedule your day colorfully
$2.99

This app helps you manage your busy schedule with a user-friendly interface. Easily track daily, weekly, monthly, and yearly views, and color-code your events for better organization. It syncs with popular accounts and offers productivity tools for efficient event management.

Daily, weekly, monthly, yearly viewsCustomizable event color-codingSyncs with iCloud, Google, Exchange, Outlook, Yahoo!
📊 Productivity
(5.3K)
free with in-app purchases
19
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
20
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