Maybe a Bad Update?
Lately the app lags a lot on my iPhone 6S. I can’t scroll through the calendar 70% of the time when using the app. My updates through the app may or may not stick. It also freezes up. I used to love this app. My family loves the ability to share our Google Calendars and update them on the go, but I am going to have to start looking for an alternative.
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Google Calendar: Get Organized, v2.34.0