From AnandtechUnfortunately, I was unable to test Flow as the iPad version of the keyboard does not have it. This is due to memory limitations imposed on extensions. The functionality and visual effects for SwiftKey Flow when run on an iPad exceeds this amount of RAM which is why only the version for iPhone and iPod Touch includes it. Flow is most useful in a one handed situation on a phone so I'm not heartbroken by its omission in the iPad version. That being said, I am still hopeful that SwiftKey will be able to do further optimization to eventually bring Flow to iPad.
RAAAAAMMMMMMM