How do I compare data from two different date ranges?

Date range comparison reports are only available in the landscape mode. This is because the landscape mode gives sufficient space to display all of the data. Turning on date range comparison disables the graph mode.

To toggle date range comparison, flip the phone horizontally to landscape mode. Press the menu button and click "Compare Range" in the popup menu.

This will compare data from the current date range and the immediately preceding dates.

For example, if you are viewing a 30-day report and enable date range comparison, it will compare the previous 30 days to the 30 days preceding that.

Even after enabling date range comparison, flipping the phone to portrait mode will show only a single date range.