I had donated multiple times over the last few years and recently purchased the revised Windows desktop version.

The desktop version works very well and the support is excellent. There is a current problem with the auto-updating that the developer hopes to resolve.

A remaining issue is the confusion between the extension and the desktop version which is not explained. When I installed the desktop version the extension no longer worked. On this page the desktop version is not referenced I'm so not sure if this page is just out of date. In any case the cost of the desktop version is $25 and well worth it.