Etar vs SolCalendar
When comparing Etar vs SolCalendar, the Slant community recommends Etar for most people. In the question“What are the best free calendar apps for Android?” Etar is ranked 2nd while SolCalendar is ranked 15th. The most important reason people chose Etar is:
Etar is a fork of the original AOSP calendar.
Specs
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Pros
Pro Open Source
Etar is a fork of the original AOSP calendar.
Pro Material design
Etar adheres to Google's Material design guidelines, i.e. it looks like a "modern Android app".
Pro Beautiful, well-designed UI
SolCalenar has a mostly monochrome color scheme and includes day, week, month, agenda and to-do views.
Pro Allows adding stickers to mark events
Adding color and monochrome stickers to mark events can help make them stand out.
Pro Works with Google Calendar, Exchange and any calendar that supports CalDAV
In addition to Google Calendar and Exchange, the application works with any cloud based calendar that supports CalDAV, such as iCloud, Yahoo! Calendar or any other third-party service.
Pro Lots of widget options
SolCalendar includes calendar, agenda, day, to-do, countdown and shortcut widgets among others.
Pro Can copy events
Also easily move events between Calendars.
Pro Integrates with various services
SolCalendar integrates with Google Tasks for to-do list management and with Google Maps & Foursquare for navigation.
Pro Weather information
SolCalendar provides real-time weather information at the top of the screen and gives access to a 7-day forecast.
Pro Lunar calendar integration
SolCalendar can be set up to use a calendar based on cycles of the lunar phases.
Pro Holiday calendar for 41 countries
SolCalendar can add holidays from 41 countries to the calendar.
Pro Available in 22 languages
SolCalendar currently is available in Finnish, Indonesian, Italian, Danish, German, French, Russian, Turkish, Spanish, Chinese, Japanese, Thai, Dutch, Polish, Vietnamese, Catalan, Malay, Portuguese, Hindi, Hebrew, Arabic.
Cons
Con No apparent way to print the agenda
An essential like printing an agenda should be very easy to do, but it's not.
Con Seems to be discontinued
It appears that the developers abandoned this app in 2015 or 2016. This is no longer available on the Google playstore anymore and won't work with modern phones.
Con Not updated regularly
Often broken features or incompatibilities with new versions of Android will persist for many months without comment by the developers, only to be addressed later on, if at all.
Con Pastel colors are not for everyone
The whole app uses only pastel colors which can be thought of as too girly or childish, definitely are not to everyone's taste.
Con Cannot find any network connection with most devices, if not all
Features that make this calendar app stand out no longer work due to that issue.
Con Annoying pop-over notifications
Pop-over notifications tend to interrupt or just get in the way. After happening numerous times it gets pretty old.
Con No iOS support
iPhone users are still waiting.