Google Calendar - Spend less time managing your day & more time enjoying it
CalenGoo - Features | 1.0.175 for Android™
Etar - Material design open source calendar for Android.
Jorte - Schedule books must be practical and has a good design.
ProtonCalendar - A secure calendar designed to be paired with the equally secure ProtonMail service.
Annual View - Annual View displays and manages calendar events within a year view.