ImproveSpeedPC is a system cleaner and optimization tool for Windows. According to its official description, it is designed to enhance the performance of your computer by cleaning junk files and removing common system and registry errors.
Like most of the numerous PC cleaners around, ImproveSpeedPC scans your computer to detect problems, which may include invalid registry entries, wrong file associations, DLL problems, junk files, etc. The scan starts automatically when you first launch the program, and after a while, it shows you a list of all the issues found. The problem is that once the scan is over, the most essential functions of the app remain disabled until you buy a license and get a registration code. In other words, the application does not work without a license code.
It does, however, include a set of free features that you can find in its tabbed, straightforward interface. These consist of a startup manager, disk defrag tool, and process manager; which are not better than the ones Windows provides. There is also a scheduler that lets you set daily or weekly scans, and a quite curious feature: voice notifications.
In short, ImproveSpeedPC is just another PC cleaner of the many you can find on the market, that promises to clean your PC and repair problems that affect its performance. As its trial version is too limited, there's no way of knowing if it works or not. In any case, there are many other PC solutions out there that you can use for free.