I understand now. Crepcoin is not designed for mobile mining but provide interfaces for modile and web management.

The beta exchange looks very good. I think crepcoin should be bounded to your exchange site.
Maybe trading pair with Crepcoin coin has certain discount in transcation fee.
To list altcoin on your exchange. It costs some crepcoins.
Part of earned crepcoins can be used as bounty or lucky pool to award new / random user with high trading volume.

I wish you every success in your future.