Crypthol – Buy Alt Coins with USD, No Need for Bitcoin exchanges (crypthol.io)

So, you made an exchange then.

How is it monetized?

The promise of "no commission crypto trading" and the lack of information on the page make me feel pretty sure about this being no more than a scam. If you're looking for low-fee altcoin trading Shapeshift[1] already exists, for instance.

[1]: https://shapeshift.io/#/coins