What are some alternatives?
When comparing Expo Sketch and Native Navigation, you can also consider the following products
React Navigation - Description will go into a meta tag in <head />
Webcodesk - A low-code rapid development tool for React Web applications
CodePush - CodePush is a cloud service that enables Cordova and React Native developers to deploy mobile app updates directly to their users' devices.
Marvel for Sketch - Sync, play and record prototypes in Sketch!
ReactXP - A library for cross-platform development