Can I earn VX token free?
Yes, you can earn free VX token by joining bounty here https://bitcointalk.org/index.php?topic=5170304
As far as I know that is not VX token but instead, that is VITE native token. And about free VX token, yes you can get it by referring.
Referring is Mining
Users can apply for referral codes to invite their friends to become traders on ViteX.
You can apply for a code by completing this form here. Referrals benefit both the inviter and the invitee.
For example, Alice sends Bob a referral code. When Bob signs up and starts trading on ViteX, he gets 10% off of all trading fees
(Base Transaction Fee + any applicable Zone Fees) on ViteX. Alice, on the other hand, benefits from Bobs trading activity as
5% of Bobs accumulated trading fees count for Alices accumulated trading fees.
For example, if Bob accrues $100 in trading fees and Alice accrues $200, Alice will effectively have $205
in accumulated trading fees (thus boosting the ratio of her trading fees to the total collected fees).
that is the only way to get free VX token in my opinion.