San Francisco (sans-serif typeface) and iOS 10 is a new variant named "SF Compact Rounded". It is used in the new contact placeholder icons introduced in the OSes. The "SF Serif" variant was showcased during the keynote at WWDC 2018 on June 4, 2018 when the all-new Apple Books app was introduced. This variant is exclusive to Apple Books in iOS 12 and macOS Mojave, is not mentioned in Apple's Typography design guidelines, and is not publicly downloadable like other variants of the San Francisco typeface. Since its introduction, San Francisco has gradually replaced most of Apple's other typefaces on their software and hardware
Helvetica for body text, and on the international market. In 1960, its name was changed by Haas' German parent company Stempel to "Helvetica" (meaning "Swiss" in Latin) in order to make it more marketable internationally. It comes from the Latin name for the pre-Roman tribes of what became Switzerland. Intending to match the success of Univers, Arthur Ritzel of Stempel redesigned Neue Haas Grotesk into a larger family. The design was popular: Paul Shaw suggests that Helvetica "began to muscle out" Akzidenz-Grotesk in New York City from around summer 1965, when Amsterdam Continental, which imported European typefaces, stopped pushing Akzidenz-Grotesk in