iOS yi camera app - Apple Watch missing ?

[Willracine]

Hi, ive just got an Apple Watch, i was wondering if the stock yi camera apps was compatible. After some google search ive found that yes, but i can't find the watch apps installed on my apple watch. My app store region is Canada. Is there multiple region version of the yi camera app ?

http://xiaomi-mi.com/news-and-actions/xiaomi-yi-application-for-apple-watch/

Thanks