A casino download software for Guts is not available, nor is it necessary since Guts allows you to play on their secure website. The Guts instant casino offers 1700 games from different developers, and you can play 1400 of them also on mobile devices.
To access the Playtech poker network, you will need to download the poker client and install it on your computer. As at the time of writing, a mobile poker platform equivalent is not being offered.