Annual View vs Etar
When comparing Annual View vs Etar, the Slant community recommends Etar for most people. In the question“What are the best calendar apps for Android?” Etar is ranked 2nd while Annual View 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 Semester view for displaying 6 months on the same screen
Pro Aligned day number view
This new view aligns months according to days numbers.
Pro Ad-supported, full free version available
A full free version is available now.
Pro Zoom
Users can zoom in on the calendar to get a less noisy view of events.
Pro A comprehensive overview of all events in a given year
The calendar app lays out all events of a given year in a single view with months on x axis and days on y axis. The events can be identified by their color codes and assigned letters.
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".
Cons
Con Noisy UI
With such information density and small scale of each interface element, it can be hard to get a sense of what information is presented.
Con No apparent way to print the agenda
An essential like printing an agenda should be very easy to do, but it's not.