Is it for computers only? Or will it work on Android tablet?
No, this application is not available on the Play Store. I've checked every application that was in connection with Bolt or had its name, and couldn't find anything.
Luckily, there are plenty apps you can use as alternatives: https://play.google.com/store/search?q=pdf%20creator&c=apps
Use the link above to download other apps from the same category that have the same main function as Bold PDF Printer has.