San Francisco as web safe font

I'm developing a microsite for an iOS app and I'm thinking to use the new Apple's San Francisco font on it. Obviously I can't use it as a webfont because of the licensing, but I think using it as safe font shouldn't be a problem...

I've tried using "sf ui text" as font-family and it works perfectly in Mac OS (El Capitan) but I can't get it on iOS 9. I've tried many other possibilities and it didn't worked.

Thanks in advance.