Syncing iCloud contacts and calendars
iCloud's auto-syncing contacts and calendars make it supereasy to keep your Mac, iPhone, and iPad up to date with each other. They even work with Windows -- but not Android.
That is, unless you buy two utilities for $3.77 each from developer Marten Gajda: Smoothsync for Cloud Calendar and Smoothsync for Cloud Contacts. Both are available in the Google Play app store.
Sign in with your iCloud credentials, and your Android smartphone is now part of the iCloud family.