1. Open Settings:

2. In Settings, select Mail, Contacts, Calendars:

3. Select Add Account:

4. Select Other:

5. Select Add CalDAV Account

6. In Server field enter secure.hitask.com/calendar/<username> where <username> is your hiTask account user name. For example if your user name that you use to log in to HiTask is john, calendar address will be secure.hitask.com/calendar/john

Enter your hiTask account user name and password

The screen will look like this:

Select Next, and that's it!

Please note that it may take a minute until tasks appear in your calendar.