I like Hike over Whats app because of following features it provide:
Hike Direct: with the help of this we can share files without internet and at ZERO data charges with in the 100 metes of a contact .
Hidden Mode:this feature allow us to to hide all our private chats from world and we can access that chat by with password.
Stickers: this is the main feature that whats app doesnt provide .it gives latest stickers with sorting it into categories . stickers are best way to talk effectively than normal chat .
Share documents and Files: in hike we can share any format files like pdf, excel, ppt, jpeg, gif, zip etc which we can not share on whats app.
Group Chat: we can make group of 500 people on hike . which is relatively bigger number proving than whats app.
Chat Theme: this is most likely feature you can change theme for individual person as per out mood .
Hike Call: this is most important feature on hike in any group we can make conference call . that is not presently available in other chatting apps.