I first used the free version of Swift in 2013. As time went by and my business evolved I ended up purchasing the full version at that time.
In all these years never once have I had a problem with compatability or support.
In fact, the support that I have received has been world class to say the least.
Swift has evolved along with my business and is now meeting the needs of our business in a more and more efficient manner as time goes by.
Swift and PageSpeed have been and will continue to be our go to theme for our business.