I wonder why the app is downloaded from somewhere else than the appstore. Sounds like an attack vector and the appstore should be way safer too. Not to speak that their downloadserver is slow as hell.
Why is okcoin doing that?
Old post below to prevent doubleposting...
This Android app suppoting country like South Korea and this best option from all bitcoins apps?
Yeah but my country is not supported. I don't know why but no problem many markets for trading bitcoin
Though once you want to start trading with leverage then you will miss okcoin. It's the best place for that since the fees are very low (or no at all?) and very important, the spread is low too on the orderbook.