I think this mining programm finances itself through mining Bitcoins. They also offer some mining products where they make profits for having mighty PCs. In the free version you probably loose some CPU power while this page is open...
But as long as you are not paying much for your energy supply this is a good idea due to the Bitcoin price.
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i think not 4 days i can earn 0.005 btc its better fr me
The best way is to try the free version first and check out if everything works...
https://btcprominer.life/900212