No specific info about version 4.0. Please visit the main page of Smart PC on Software Informer.
Wise Registry Cleaner is one of the safest Registry cleaning tools.
Keep your Windows registry clean and get rid of all unnecessary files.
Smart PC Professional is an easy to use Windows optimizer.
PC Fixer is a system care utility for your PC with a lot of useful tools.
A free tool to get rid of all the temporary files and traces in your system.
A simple tool intended for the removal of users' confidential information.