There was a PAIcom demo when PAIcom launched but a few months ago I decided to remove it because it was really outdated and didnt reflect the new current state of the premium version of PAIcom. (Since launch, PAIcom got a lot of updates that made him have more feature and be more awesome haha)
Eventually I will update the demo and re-release it however right now I am mostly focusing on releasing the premium PAIcom Steam version + it's features (ex: the modding steam-workshop feature, etc)
I hope I helped you and I hope ya will have a nice day/night! :3