As you can see on the official web page, Comical is compatible only with Linux, Mac OS X and Windows operating systems. You can't install it on your Blackberry Playbook which uses Blackberry Tablet OS.
The program quickly converts CBR, CBZ, ZIP, and RAR files to PDFs.
CBViewer is a comic book viewer for comic book archives.
PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader for Windows.
As you can see on the official web page, Comical is compatible only with Linux, Mac OS X and Windows operating systems. You can't install it on your Blackberry Playbook which uses Blackberry Tablet OS.