Can't open or view charts

[pdxdjazz]

In order to view iReal pro charts, use iReal pro app MUST be installed on the device you are using.

All the charts can be easily downloaded using the iReal pro app. http://irealpro.com (which is required)
It's only available for Mac, iOS and android devices.

If you're using Windows.... you could try an using android emulator like Bluestacks so you could install and use the android iReal pro app on your PC.
http://irealpro.com/how-to-use-ireal-pro-on-windows-pc/

)BOB