Best calendar apps
Calendar clients, shared family calendars and time-blocking planners, from free built-in calendars to AI auto-schedulers, encrypted calendars and open-source desktop apps.
29 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All calendar apps
- Alternatives to Morgen
Calendar and daily planner that combines multiple calendars with tasks and AI time blocking.
PaidWeb, Windows, macOS, Linux, iOS, Android - Alternatives to Google Calendar
Google's free web and mobile calendar, the default for Gmail and Google Workspace users.
Free plan + paidWeb, iOS, Android - Alternatives to Reclaim.ai
AI scheduling that defends focus time and fits tasks, habits and meetings into your calendar.
Free plan + paidWeb, Browser extension - Alternatives to Fantastical
Flexibits' polished calendar for Apple devices and Windows, known for natural-language event entry.
Free plan + paidmacOS, iOS, Windows - Alternatives to Akiflow
A time-blocking planner that gathers tasks from many apps into one inbox beside your calendar.
PaidWeb, macOS, Windows, iOS, Android - Alternatives to Proton Calendar
End-to-end encrypted calendar from Swiss privacy company Proton, with a free plan.
Free plan + paidOpen sourceWeb, iOS, Android, macOS, Windows, Linux - Alternatives to Motion
An AI planner that automatically schedules tasks and projects into the gaps in your calendar.
PaidWeb, macOS, Windows, iOS, Android - Alternatives to FlowSavvy
A planner that auto-schedules your tasks into free calendar time, with a free-forever plan.
Free plan + paidWeb, iOS, Android - Alternatives to Sunsama
A daily planner that walks you through planning each day from your tasks and calendar.
PaidWeb, macOS, Windows, Linux, iOS, Android - Alternatives to Apple Calendar
The calendar built into macOS, iOS and iPadOS, synced through iCloud and other accounts.
FreemacOS, iOS, Web - Alternatives to Notion Calendar
Notion's free desktop and mobile calendar, formerly Cron, that links events with Notion pages.
FreeWeb, macOS, Windows, iOS, Android - Alternatives to BusyCal
A long-running power-user calendar for Mac and iOS, sold as a one-time purchase.
PaidmacOS, iOS - Alternatives to Tuta Calendar
Encrypted calendar from German provider Tuta, with free open-source apps on mobile and desktop.
Free plan + paidOpen sourceWeb, iOS, Android, Windows, macOS, Linux - Alternatives to Structured
A visual day planner that lays your tasks and calendar events out on a single timeline.
Free plan + paidiOS, macOS, Android, Web - Alternatives to Ellie
A minimalist daily planner for brain-dumping tasks and timeboxing them onto your calendar.
PaidWeb, macOS, Windows, iOS - Alternatives to Calendars by Readdle
A free iPhone calendar from Readdle that combines events, tasks and natural-language entry.
Free plan + paidiOS - Alternatives to Fossify Calendar
Open-source, ad-free Android calendar that keeps events on your device without internet access.
Open sourceAndroid - Alternatives to KOrganizer
KDE's open-source calendar and task organiser, part of the Kontact personal information suite.
Open sourceLinux - Alternatives to Dato
A one-time-purchase Mac menu bar calendar with time zones and full-screen meeting alerts.
PaidmacOS - Alternatives to SkedPal
An AI scheduler that fits tasks into time maps you define for work, home and focus.
PaidWeb, iOS, Android - Alternatives to Zoho Calendar
Zoho's free online calendar for individuals and teams, with sharing and appointment booking.
FreeWeb, iOS, Android - Alternatives to Trevor AI
A task planner that suggests time blocks for your to-dos and syncs them to your calendar.
Free plan + paidWeb - Alternatives to Tiimo
A visual daily planner with timers and routines, designed with neurodivergent people in mind.
Free plan + paidiOS, Android, macOS, Web - Alternatives to Vimcal
A fast, keyboard-driven calendar for busy professionals and executive assistants.
PaidWeb, macOS, Windows, iOS - Alternatives to GNOME Calendar
The default calendar app of the GNOME desktop on Linux, with CalDAV and Google sync.
Open sourceLinux - Alternatives to Itsycal
A tiny free menu bar calendar for the Mac that shows your events at a click.
FreeOpen sourcemacOS - Alternatives to Cozi
A family organiser with a shared colour-coded calendar, shopping lists, to-dos and meal planning.
Free plan + paidiOS, Android, Web - Alternatives to TimeTree
A free shared calendar app for families, couples and groups, with chat on each event.
Free plan + paidiOS, Android, Web - ClAlternatives to Clockwise
Clockwise
DiscontinuedAn AI calendar assistant for teams that optimised focus time; shut down in March 2026.
Free plan + paidWeb, Browser extension
Our picks by need
Best for most people
MorgenBest for a free option
Apple CalendarBest for open source
Proton CalendarBest for Mac
FantasticalBest for Windows
AkiflowBest for Linux
SunsamaBest for iPhone and Android
Google CalendarPopular comparisons
Common questions
What are the best calendar apps?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading calendar apps right now are Morgen, Google Calendar, Reclaim.ai, Fantastical and Akiflow.
Are there free calendar apps?
Yes. Google Calendar (free plan + paid), Reclaim.ai (free plan + paid), Fantastical (free plan + paid), Proton Calendar (free plan + paid) and FlowSavvy (free plan + paid) have a free option, out of 19 free or freemium apps we track.
Which calendar apps are open source?
Proton Calendar, Tuta Calendar, Fossify Calendar, KOrganizer, GNOME Calendar and Itsycal.