This plugin is rarely updated. Yes there is no need. A good tool and it does its job well. And you do not need to do anything to improve it and make it the operating system. Respect to the author, because he understands.
This plugin no PRO version.
But there is a small, annoying problem (about which most people probably do not even know, especially someone on free hosting sites). This plugin makes a lot of error entries in the log file.
And in general it is possible to live with it. But over time, the log file can grow to an enormous size. This somehow affect the system performance.