Hi everyone,
I’ve tried this calendar app on my Lemfo LEMP because the Google calendar doesn’t work on this watch:
And it’s really, really excellent for it. It fits perfectly well to the round screen and the usage experience and sync with Google it’s great, I DEFINITELY want to recommend it since other apps like One Calendar didn’t worked very well at the time of sync it with Google.
I hope you’ll enjoy it too 
is not free, but it’s worth every dime.