Just a note - the 1Password Mac app is MILES ahead of the 1Password app. I've been using both for about 3 years now, and the separation is only getting larger. 1Password is smooth, fast, and fluid on Mac OSX. 1Password works, but is none of those on Windows.
There is 1Password Windows Modern Alpha[1] which so far looks very promising. It's still not very suitable for a day to day use though. (Screenshot: click "Getting started" in the forum, then "Windows 10 Store")
They also have bundled licenses for both platforms.