If you don't have a BlackBerry device:
You can use this app on your Android device absolutely free for 30 days. After that to continue using the app subscribe to BlackBerry Hub+ from the app or from BlackBerry Hub+ Services. Tasks requires BlackBerry Hub+ Services App.
If you have a BlackBerry device:
BlackBerry smartphones powered by Android get the app for free.
BlackBerry Tasks will increase your efficiency at work by creating tasks setting due dates and reminders to help you stay focused and meet your deadlines.
• Receive notifications for upcoming tasks
• Effortlessly sync recurring tasks due dates and reminders
• Synchronized by Microsoft Exchange ActiveSync 12.x or later
• Automatic setup for popular email services including: Windows Live Hotmail Microsoft Outlook and Microsoft Exchange ActiveSync
• Fully supports Android for Work deployment and when enabled by your administrator supports unifying your personal and work views while maintaining strict data storage separation.
• Part of BlackBerry Hub+