If you want the extra features, buying the $4.99 license supports the independent developer and ensures you have a valid, safe serial number.

: Each device has its specific update process. This might involve running a software update tool on your computer, or it could be as simple as uploading a file to the device through a web interface.

If you are a power user, gamer, or video editor, the CleanMem Mini Monitor is invaluable. It lets you see exactly when your system is under pressure. However, the free version running silently is 90% as useful for casual users.