Why does the iCloud app for Windows have a 2.7 stars rating out of Five? Because it could be more reliable synchronizing the calendar events and phone contacts. So what is the solution to achieve total reliability synchronizing outlook contacts and calendar events with the iPhone, iPad and the MacBook Pro? The answer is an exchange office 365 account which costs $6 a month in combination with outlook on the laptop / PC and Outlook on the iPhone. How powerful is Outlook on the Phone? My Outlook is setup for three exchange accounts and one Gmail account.