title: Should I include Calendar functionality into my android App? (Is calendar pre-installed on most phones?)
body: <p>I was thinking of including functionality to allow users to click on dates in the "important dates" section of my app, but was wondering if it is safe to assume that most phones have Google calendar pre-installed. </p>
  
  <p>I was planning on writing a custom filter to Linkify the dates and pass them to the calendar app as an event.</p>
  
  <p>This project is planned for 1.6, but 2.1 is also a possibility. (Trying to reach the largest possible audience)</p>