For the registered users there is a free download of the latest Trefík version for free. The current version is: 126.96.36.199.
Trefík 15 - 32 bit, Trefík 15 - 64 bit - it is necessary to save the files into the folder where the whole Trefík software is installed. It does not work if run from a different folder. It does not work if you are not a registered Trefík user.
You can read Trefík news.
It is possible to download the latest version directly from Trefík software using the option Update / New version. That button NEW VERSION appears right when running Trefík if there is a newer version available.
Anyway if you need to use this download page you need to overwrite the current Trefik executable file.