As for ETH or ETC ... we will take a final decision later, within nearest month.

Currently, we are developing application (working prototype), and also we plan in autumn further to develop CRYPTonFly's infrastructure services, like payment system, wallet, exchange, etc. However, initially we need to launch the key functional that will enable to pay CRON to user for performed specific activities.
Mobile application will be the first basic activity through which users will be able to earn CRONs by performing check-in in various places.
We also plan that any developer could be create own application, where his users could be earn CRONs for performed activities. For example, to write posts and comments to them as steemit.


What blockchain use?
We consider also other blockchain platforms for the project implementation, for example, to use the IBM blockchain
http://www.ibm.com/blockchain/