Is the licence for DSPCB Pro a perpetual one? DesignSpark Mechanical April 22, 2021 19:34 Updated Yes, the licence key will work indefinitely for the version you have bought. Related articles Does the DSPCB Pro one-off cost include software updates? My product key was not accepted. How do I fix this? Can I use DSPCB Pro offline? Can I use my DSPCB libraries with PRO? Getting started with DSPCB PRO Comments 0 comments Please sign in to leave a comment.