I’m not sure actually. It might be that they are using www.standard-memory.com for these competitions where they are using digital recall, but I honestly don’t know. It doesn’t really matter much though, because both standard-memory and the program I wrote are using the official sound files. So for practicing, either one works perfectly.
@fogelmemory - If you really want to know, just send a mail to Idriz/the organisers and they will tell you.