Flex Layout Designing
React Native application design is completely dependents upon flex. If you are new in this then you must have to understand the basics of flex. Here I am sharing one of the flex layout designer tools which I prefer while designing the flex boxes. Please remember I am not talking about the complete design I am talking about the flexbox designing, It is a skeleton which becomes the base of any app and you can start from here.
The platform is called Yoga Layout which is a cross-platform layout engine, build flexible layouts on any platform with a highly optimized open-source layout engine designed with speed, size, and ease of use in mind. It provides a playground to make your flexbox very fast.