We began our new series of open-source options to Google apps with a list of Gmail-type applications, and now it’s a great opportunity to look at ones that mirror the functionality of Google Calendar! In case you’re searching for something more privacy-conscious, or on the off chance that you simply need to perceive what free Android app developers are doing, we’ve incorporated probably the best open-source calendar apps for Android directly here.
Simple Calendar
At the point when asked social media for open-source options to Google apps, the Simple Mobile Tools series of applications was raised by many. Created by Slovakian-based Tibor Kaputa, Simple Mobile Tools is a suite of efficiency apps that mirrors the ecosystems you get from the likes of Google, Microsoft, and Apple.
Simple Calendar has pretty much everything we look for from a calendar app — a search function, widgets, notifications for reminders, multi-calendar support, no advertisements, and more. If you need to use local calendars, you can import and export .ics files with only a few taps.
The app additionally completely supports CalDAV, so it can sync calendars from any accounts set up on your phone — including Google Calendar, Outlook, NextCloud, etc.
While a free version of Simple Calendar is as yet accessible, it’s never again kept up as of October 2019. The free application has every one of the features we referenced beforehand, however the Pro version has more notification and invitation options. It’s most likely worth spending the $1.19 just to help improvement.
DAVx⁵
DAVx⁵ isn’t a calendar app all alone — rather, it goes about as a sync server for other calendar and contacts applications (including the ones referenced above) to get to cloud accounts. For instance, you could use DAVx⁵ to sync your Google Calendar and Contacts to a gadget without Google Play Services. On the off chance that you need to be totally in control of your data, you could host a CalDAV server on your PC and use DAVx⁵ to access that information from your Android gadgets.
DAVx⁵ can pull information from most cloud services, including iCloud, Google, Nextcloud/OwnCloud (famous choices for self-hosting), Fastmail, Synology DSM, Yahoo, and numerous others. Since it goes about as a CalDAV supplier for the Android system, most contacts/calendar apps ought to have the option to get to it, including the ones that ship with your phone.
While DAVx⁵ is open-source, the compiled app costs $4.69 on the Play Store.
Etar
Another great open-source option is Etar, created by Jochen Sprickerhof and Suhail Alkowaileet and dependent on the AOSP Calendar app. It’s lighter on features than Simple Calendar, yet has month/week/day/agenda views, both light and dark themes, notification support, no advertising, and a decent design.
Like Simple Calendar, it can pull calendars from Android’s worked in CalDAV service, so our Google Calendar plans showed up with no effort. You can likewise import and export calendars in .ics format.
Unfortunately, there’s no home screen gadget (it hasn’t been updated to appropriately work with more up to date Android versions), which we depend on intensely with Google Calendar. All things considered, Etar is a strong calendar app with an incredible design, and it merits looking at it.
