Both HEIC and HEVC use the same image encoding technology, but in a different way. If the version on the website if higher, delete the old codec and install the latest version. If it’s the same, you have the latest version.
Then visit this page, hover over the download button and compare it with the version you have installed. Go to Control Panel\Programs\Programs and Features on your PC and check which version of the codec you have installed. How do I update to the new version? First check whether you need to update.
It’s absolutely free! Unless you plan on using the software for business purposes.
Frequently asked questions How much is CopyTrans HEIC for Windows (CTH)?