

iOS / iPad iOS Free
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I’ve used Google Calendar on my MacBook, iPhone, and iPad for years — sorry, Apple Mail, it’s not you, it’s me. Using Google's alternative as my default always made sense, considering I rely on Gmail for emails and Google Drive for my work. And I’ve never had any complaints. It works well, syncs with my emails, and has all the features I could want from a calendar. Or at least that’s what I thought.