New Google apps are always worth a mention, and this is certainly the case with Google Calendar.Not strictly 'new', the app has been installed on selected Android devices like the Nexus S and Galaxy Nexus, but now it is being rolled out further afield. But not universally – the app is still limited to Ice Cream Sandwich and Jelly Bean, although that's an ever-growing percentage of Android smartphones.If you have one of those flavours of Android, you can go get it now from Google Play. Once you have it, the app makes it easy to manage all your calendars in one place, including those from your Google accounts and other calendars synced to your Android device. Specifically, you can create, edit and delete events, as well as being able to respond to invitations, snooze events directly from a notification if you’re not quite ready, use predefined messages like 'I'll be late' to participants and event listings, pinch to zoom in and out of a day and set a home time zone to help you manage your time better when on the move.If all of that appeals, Google Play is waiting for you. The app, of course, is free.