Facebook iOS 10 Light contains the stuff you use the most when designing for iOS. Most of the components there match vanilla iOS components so you can be confident designs map to the tools your engineers use. In Figma and Sketch, we’ve worked in 1x and in Photoshop at 2x. Where possible we’ve tried to make components scale across device widths.
Facebook’s latest design resources – iOS 10 GUI, iPhone 7 and 7 Plus, Apple Watch Series 2, and Google Pixel.