When comparing Etar vs Informant, 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 Informant is ranked 9th. The most important reason people chose Etar is:
Etar is a fork of the original AOSP calendar.
Specs
Ranked in these QuestionsQuestion Ranking
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 Integrates tasks with calendar
Informant supports integration between the user's task list with their calendar.
Pro Seamless syncing
Informant syncs seamlessly between mobile devices and PCs, so you can create an event or task anytime on your phone and it will appear on whichever computer you are using. One license includes all devices.
Pro Integrates notes with contacts, tasks and calendar
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 Price
It’s too expensive.