https://www.sketchapp.com/ (great tool, don't like that it's a subscription model). The target audience is designers. I was just confused when the button said "download sketch" while it should probably be "download templates for sketch(tm)". For a second I thought it was a special build of sketch.
How is it a subscription model?
It’s not a "subscription" model in the way that Adobe CC is (you pay $99 for updates for a year, rather than for access to the software itself). But most designers I know still describe it as a subscription because, as soon as you fall behind on the updates, you start to lose file compatibility with your colleagues or external agencies, effectively forcing you into a $99/yr recurring payment.
You outside of Facebook land also can't Google I see.