Google Calendar AlternativesOnly apps categorised as Calendar Apps

The best Calendar alternative to Google Calendar is Proton Calendar, which is free. If that doesn't suit you, our users have ranked more than 100 alternatives to Google Calendar and loads of them are Calendar Apps so hopefully you can find a suitable replacement. Other interesting Calendar App alternatives to Google Calendar are Fossify Calendar, Tuta Calendar, Etar and KashCal.

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Most Google Calendar alternatives are Calendar Apps, but you can also narrow the list to Todo List Managers or Task Management Tools. Other popular filters are Open Source, Android, Self-Hosted, iPhone and Free. You can also filter for EU-based alternatives if you prefer software from the European Union.

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Google Calendar alternatives page was last updated Oct 25, 2026

Proton Calendar
122 likes
Your calendar is a record of your life. Proton Calendar helps keep it private.
57 Proton Calendar alternatives
Cost / License
Freemium
Proprietary
Application type
Calendar
Origin
Switzerland
Since
Since 2019
Platforms
Online
Android
iPhone
Android Tablet
iPad
Android Auto
Tor
Switzerland
+1
Good alternative?Is Proton Calendar a good alternative to Google Calendar?

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4comments
Proton Calendar vs Google Calendar Comments
Positive comment by Klaes Ethan · Mar 1, 2026
Looks very nice and clean, works well, has loads of features and is mostly free. My one complaint (and the reason I will be using calendar.online instead) is that there is no horizontal version for android tablets. I don't want to use my android tablet vertically.
Comment by newbread · Feb 17, 2023
ProtonCalendar is still missing the search feature.
Positive comment by Deividas Losikov · Sep 26, 2021
ProtonCalendar may not be as feature-rich as Google Calendar, but their main focus is protecting user data with end-to-end encryption. The free plan is enough for basic calendar functionality, but paid subscriptions give extra benefits for supporting their business model, as that's their only source of income.
3 of 4 comments
Proton Calendar is Freemium and ProprietaryGoogle Calendar is Free Personal and Proprietary
Proton Calendar is Privacy focusedGoogle Calendar is not according to our users
Fossify Calendar
68 likes
Your privacy-aware, open-source calendar with intuitive design and multi-platform syncing.
72 Fossify Calendar alternatives
Cost / License
Free
Open Source (GPL-3.0)
Application type
Calendar
Origin
India
Since
Since 2024
Platforms
Android
Android Tablet
F-Droid
OpenAPK
India
Good alternative?Is Fossify Calendar a good alternative to Google Calendar?

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3comments
Fossify Calendar vs Google Calendar Comments
Positive comment by amphetamachine · Jun 19, 2026
Numerous outstanding bugs make Fossify Calendar not recommendable as a working alternative to Google Calendar. Some I've personally experienced: Often fails to display events in the calendar; Interprets event recurrence information incorrectly; Re-writes UIDs when importing, leading to duplicating events on re-import/update.
Comment by bulldogs · Sep 25, 2026
Fossify Calendar and Google Calendar are not the same kind of thing, and that decides whether the swap does what you want. Google Calendar is a service: the data, sharing, invitations and access control live on Google servers, and the Android app is one client for it. Fossify Calendar is only a client. It keeps events in a local database on the phone, and its CalDAV sync option just reads whatever calendar accounts Android already holds - which can be a Google account, or a Nextcloud, Radicale or Fastmail calendar bridged in through DAVx5. So if the problem is the Google app itself (its interface, or needing Google software on the phone at all), Fossify fixes that while still showing the same calendars. If the problem is Google holding the data, Fossify alone changes nothing; you also need a CalDAV server you control, and sharing and invitations then become whatever that server offers. Two hard limits either way: it is Android-only with no web or desktop view, and a purely local calendar has no server behind it, so nothing can be shared or invited from it at all.
Positive comment by Guest · Oct 6, 2024
Customizable and you have control over your data.
3 of 3 comments
Fossify Calendar is Free and Open SourceGoogle Calendar is Free Personal and Proprietary
Fossify Calendar is Privacy focused, Customizable and LightweightGoogle Calendar is not according to our users
Tuta Calendar
52 likes
Tuta Calendar offers secure event organization with end-to-end encryption and no ads or tracking. Enjoy multi-device sync, multiple calendar views, and offline access. Fully compliant with strict German data protection laws. Manage recurring events, unlimited calendars, and seamlessly integrate with Tuta Mail.
51 Tuta Calendar alternatives
Cost / License
Freemium
Open Source (GPL-3.0)
Application type
Calendar
Origin
Germany
EU
Since
Since 2024
Platforms
Online
Android
iPhone
Android Tablet
iPad
F-Droid
OpenAPK
Thunderbird
Germany
EU
Good alternative?Is Tuta Calendar a good alternative to Google Calendar?

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1comment
Tuta Calendar vs Google Calendar Comments
Positive comment by JOPloume · Apr 20, 2025
End-to-end encryption and works across all platforms: for me, on Android, Mac, and Windows (and even via Browser)!
1 of 1 comments
Tuta Calendar is Freemium and Open SourceGoogle Calendar is Free Personal and Proprietary
Tuta Calendar is Privacy focused, Lightweight and CustomizableGoogle Calendar is not according to our users
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Etar
89 likes
Material design open source calendar for Android.
Cost / License
Free
Open Source (GPL-3.0)
Application type
Calendar
Origin
Germany
EU
Since
Since 2015
Platforms
Android
Android Tablet
F-Droid
OpenAPK
Germany
EU
+8
Good alternative?Is Etar a good alternative to Google Calendar?

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5comments
Etar vs Google Calendar Comments
Top Negative Comment by paddling583 · Jul 2, 2024
It has a terrible interface and the description lied about it being a material design. It also lacks export and sync.
Negative comment by Guest · Jan 24, 2025
does not conform to UNIX principles (let the application be one, but it will work well and cooperate with other functions and applications in the system); The interface is hideous. Nothing is anywhere, it's hard to figure out; It is not practical. Notion Calendar or Apple Calendar for example have a lot of common handy features that Etar doesn't have;
Negative comment by Third Opinion · Apr 12, 2022
Import and export function is listed but it didnt work for me at all. Worse, on my latest phone I could not even import an ICS file with all my stuff.
3 of 5 comments
Etar is Free and Open SourceGoogle Calendar is Free Personal and Proprietary
Etar is Lightweight and Privacy focusedGoogle Calendar is not according to our users
KashCal
14 likes
A privacy-first calendar that works offline and looks beautiful. Connect to iCloud — or don't. Your schedule, your choice.
58 KashCal alternatives
Cost / License
Free
Open Source (Apache-2.0)
Application type
Calendar
Since
Since 2026
Platforms
Android
F-Droid
OpenAPK
Good alternative?Is KashCal a good alternative to Google Calendar?
Fantastical
79 likes
Simplify scheduling with natural language input, major platform sync, vibrant color-coded views, personalized writing style recognition, task and conference call integration, and customizable widgets for comprehensive calendar management.
101 Fantastical alternatives
Cost / License
Freemium
Proprietary
Application type
Calendar
Origin
United States
Since
Since 2011
Platforms
Mac
Windows
iPhone
iPad
Apple Watch
visionOS
United States
+7
Good alternative?Is Fantastical a good alternative to Google Calendar?

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1comment
Fantastical vs Google Calendar Comments
Negative comment by Guest · Oct 18, 2023
It's not a calendar service - you need to bring your own calendar
1 of 1 comments
Fantastical is Freemium and ProprietaryGoogle Calendar is Free Personal and Proprietary
Fantastical is Privacy focusedGoogle Calendar is not according to our users
Apple Calendar
148 likes
Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for school, a third for work, and so on. See all your calendars in a single window or choose to see only the calendars you want.
144 Apple Calendar alternatives
Cost / License
Free
Proprietary
Application type
Calendar
Origin
United States
Since
Since 2009
Platforms
Mac
iPhone
iPad
iCloud
United States
+1
Good alternative?Is Apple Calendar a good alternative to Google Calendar?
Nextcloud Calendar
35 likes
Calendar interface for CalDAV enabling cross-device event sync, web-based editing, recurring events, Nextcloud Contacts integration, WebCal subscriptions, attendee invites, color coding, event notifications, privacy-focused hosting, and import/export support.
Cost / License
Free
Open Source (AGPL-3.0)
Application type
Calendar
Origin
Germany
EU
Since
Since 2018
Platforms
Online
Self-Hosted
Nextcloud
Germany
EU
Good alternative?Is Nextcloud Calendar a good alternative to Google Calendar?

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2comments
Nextcloud Calendar vs Google Calendar Comments
Positive comment by Guest · Nov 30, 2019
Free (and open source) alternative. Your data is yours !
Comment by bulldogs · Sep 22, 2026
The split that decides this one is which side owns the runtime that reacts to a calendar change.

Google Calendar is scriptable from inside the account: CalendarApp in Apps Script creates and moves events and reads guest lists, an onEventUpdated trigger fires when something changes, and the advanced Calendar service exposes the full v3 API including watch channels. Nothing to host, no credentials past one authorization - and none of that surface exists outside Google.

Nextcloud Calendar is plain CalDAV on a server you run, so any client speaks to it - Thunderbird, DAVx5, a script of your own - and the events sit in a database you can query directly. There is no in-place scripting runtime, though: reacting to a change means polling, a Flow rule, or an app you write, and you supply the host and the scheduler.

Both speak CalDAV, so neither is a closed box. Pick by which half is hard. Automation already touching Gmail, Sheets or Drive favours the trigger that lives next to the data; own infrastructure, and events you need queryable or portable across providers, favours CalDAV.
2 of 2 comments
Nextcloud Calendar is Free and Open SourceGoogle Calendar is Free Personal and Proprietary
Nextcloud Calendar is Privacy focusedGoogle Calendar is not according to our users
Morgen
32 likes
Brings together calendars, to-dos, productivity apps, and schedulers in one platform. Integrates with major services like Google Calendar, iCloud, Todoist, and video conferencing tools such as Zoom. Offers native scheduling similar to Calendly, enhancing time management efficiency.
135 Morgen alternatives
Cost / License
Paid
Proprietary
Application typeApplication types
Calendar
Todo List Manager
Origin
Switzerland
Since
Since 2017
Platforms
Mac
Windows
Linux
Android
iPhone
Switzerland
+2
Good alternative?Is Morgen a good alternative to Google Calendar?
Simple Calendar
52 likes
A simple calendar with optional CalDAV synchronization. You can easily create recurring events and setup reminders, it can also display week numbers.
Cost / License
Freemium
Proprietary (GPL-3.0)
Application type
Calendar
Origin
Israel
Since
Since 2016
Alerts
Warning
Platforms
Android
Android Tablet
Israel
+5
Good alternative?Is Simple Calendar a good alternative to Google Calendar?

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2comments
Warning
The Simple Mobile Tools suite of mobile apps have been bought by ZipoApps in December 2023, and now show some ads, while not being open source anymore. If you're looking for something similar to the original Simple Mobile Tools apps, you should take a look at the Fossify suite of apps (listed on AlternativeTo). More information here: Simple Mobile Tools bought by ZipoApps, sparks controversy over future of open source apps
Simple Calendar vs Google Calendar Comments
Positive comment by Guest · Sep 21, 2018
Open source, has widgets and is quite configurable
Positive comment by Malkhaz Nikolashvili · Nov 12, 2022
I really prefer Google Calendar
2 of 2 comments
Simple Calendar is Freemium and ProprietaryGoogle Calendar is Free Personal and Proprietary
Simple Calendar is CustomizableGoogle Calendar is not according to our users
Calendula
6 likes
A modern Material 3 Expressive calendar for Android. Reads, writes, and reminds — on top of the system calendar, with zero network access.
Cost / License
Free
Open Source (MIT)
Application type
Calendar
Origin
Germany
EU
Since
Since 2026
Platforms
Android
Android Tablet
Obtainium
F-Droid
Germany
EU
Good alternative?Is Calendula a good alternative to Google Calendar?
Notion Calendar
18 likes
Experience a fully integrated calendar with Notion, syncing events from Google Calendar, offering built-in scheduling, time zone support, and the ability to connect multiple accounts. Manage all events, personal and work, with a modern design, light and dark modes, and Lock Screen support for iOS 17.
150 Notion Calendar alternatives
Cost / License
Freemium
Proprietary
Application type
Calendar
Origin
United States
Since
Since 2024
Platforms
Mac
Windows
Online
Android
iPhone
United States
+9
Good alternative?Is Notion Calendar a good alternative to Google Calendar?

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1comment
Notion Calendar vs Google Calendar Comments
Negative comment by Guest · Jul 20, 2026
Notion is too complicated and requires a great deal of user input in general to become functional. Most templates are locked behind a paywall and Notion requires you to trust a third party with your data rather than being able to host a local file and sync. This is not a viable alternative and should not be at the top of the list by any stretch of the imagination. I'm honestly unclear why it's even listed.
1 of 1 comments
Notion Calendar is Freemium and ProprietaryGoogle Calendar is Free Personal and Proprietary

12 of 183 Google Calendar alternatives

Google Calendar AlternativesOnly apps categorised as Calendar Apps

Alternatives list

Proton Calendar

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Fossify Calendar

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Tuta Calendar

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Etar

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KashCal

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Fantastical

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Apple Calendar

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Nextcloud Calendar

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Morgen

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Simple Calendar

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Calendula

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Notion Calendar

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