ChessLink basically allows your Exclusive board to take advantage of the strong CPU on your phone or tablet, by disconnecting the normal control unit from the board, and connecting ChessLink in its place. You then use the chess app on your device to control the chess board.
As I write this, there is one app on iOS and one on Android that support the Exclusive, using Bluetooth.
On iOS, the Hiarcs app connects to the board without even having to pair as a bluetooth device. Hiarcs has a super strong engine, with an ELO rating of about 3100 on an iPad pro, and not much weaker on lesser iPads and iPhones. That's much stronger than the world champion. This is also a very polished chess program, with lots of features, including selectable playing styles and a big opening book with very useful options. It can also estimate your chess rating and to play at your level, which is a really nice feature. It plays a very different game from the Exclusive personality. I don't remember the price, but it's well worth it.
On Android, Chess for Android is available. This is a free App, and has some very interesting features. The main one is that it works with any UCI engines for Android. These differ from the UCI engines for Mac or Windows or Linux, but there are quite a few available, including Komodo and Stockfish. These two engines in particular are EXTREMELY strong, especially if your Android has a fast multicore processor. The biggest downside to this app is that it has a very limited built-in opening book, and not many ways to make these engines play weakly enough to give normal humans a chance against them. In theory, if you can find a UCI engine that accepts ELO as a parameter, and also can be made to work directly with an external opening book, this app could be really nice working with that engine.
Maybe someone will someday add support for one of the big PC or Mac chess programs, but even today the ability to use Hiarcs is reason enough to get this.