If you use alarms, use this app
I have a fair number of meetings every day and this app is great for being on time for all of them. Its strength is managing alarms and snoozes, but it also manages the other aspects of a calendar real well. Ive used all of the other big calendar apps but always return to this one. The watch app works great as well. And when I reported issues on two different occasions, not only did they get back to me right away, the issues were resolved very quickly.
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Calalarm - Calendar, v3.90