Hello.I want to transfer info from. 1 app to How do I do this?

I already have a calendar app in which I've stored appointments, etc. However, found a better app for this.I don't want to lose important dates I have now,but I want move this information to this other app.How?

Welcome to Android Central! Which phone do you have, and which account are your calendar events saved to? On most phones, you can save a calendar event to either your Google account (which syncs automatically to your Google Calendar in your cloud, and should then sync automatically with any 3rd party calendar app that is also compatible with Google Calendar), or the local Phone account (which doesn't sync anywhere). Most 3rd party calendar apps should also be able to read the phone account, though.