React Native’s main idea is to make the development of mobile apps easier, faster, and more agile. We build a well-performed app without having to understand languages that are used natively separately for iOS and Android, such as Objective-C / Swift or JavaScript / Kotlin. Moreover, we can add native code segments when it’s necessary, that, in consequence, makes the app perform as a natively developed. This feature reduces the development cost, as well as save time in comparison with writing two different codes.