Vietnamese keyboard for iOS plz plz plz!!!!

Hi,Vietnamese on phone works best with SwiftKey!!!
I'm so in love with typing Vietnamese with Android SwiftKey. How come SwiftKey do Vietnamese so good typing is much better than even on Vietnamese stock keyboard! But I'm using an iPad now and typing Vietnamese is a pain without SwiftKey!
Could you pretty please add Vietnamese language on the iOS ecosystem???
I would not want to type Vietnamese on any other keyboard anymore!

Please make it possible! We Vietnamese need that, desperately!!!
Cuong