From PC Utilities Pro:
To stop your PC from experiencing continuous crashes or screen freezes, you need to free up your computer's hard drive. Optimizer Pro is what you need for this process which allows your PC more flexibility in operating and carrying out complicated tasks with greater ease. What Optimizer Pro does is delete all unwanted files that may be taking space on your PC's hard drive. These are mostly for files you may never need at all. System Clean up- Optimizer Pro helps to organize and to rid your computer of any inessential files causing your PC to run slower than normal. All these include invalid shortcuts, stored history items, your download history or temporary files off the internet. Detailed Scan Reports- After a thorough PC check, the Quick Scan tool shows you all the critical issues found grouped into particular categories. By a more in depth analysis it also generates a report for all detected problems that may be potential threats to the PC's optimal running. To counter this, you can also manage the settings and check the number of programs running. Error Tracking- This robust software helps to keep track of all your computer files and the self-help tool deletes any items which can cause backed up memory, giving way to poor PC performance. When the computer registry is clean and working, so is its overall health, giving your PC more credibility. Increase Memory space and Stability- Optimizer Pro makes sure that your computer is free of any bulky, unused or inessential files or applications. When this memory is free and open for other important tasks, then ultimately all crashes and freezes are reduced ensuring a better all-round performance. This also makes your PC more stable and reliable. Restore and Backup- Completely safe to use, this tool responsibly deletes bad files and if you may ever need them again, the Backup feature allows for full recovery of all these files. This button undoes all unwanted changes, giving you complete control of your PC.
Once you subscribe and then cancel they continue to hit your account for payment each month. I've been trying for four months to stop paying for it. I have to end up cancelling my visa account to stop it.