Etar is material designed open source calendar, for everyone!
Features:
★ Month view.
★ Week, day & agenda view.
★ Uses Android calendar sync. Works with Google Calendar, Exchange..etc.
★ Material design.
★ Free, open source and absolutely no Ads.
★ Agenda widget.
Bugs & feedback: https://github.com/xsoh/Etar-Calendar/issues
Source Code: https://github.com/xsoh/Etar-Calendar