Comment Comment by t-writescode * Facebook Messenger came out on Android in 2011 [0] * React Native came out in 2015 is written in C++, Java, JavaScript, Objective-C, Kotlin [1] [0] https://en.wikipedia.org/wiki/Messenger_(software)[1] https://en.wikipedia.org/wiki/React_NativeSo, even if they did use React Native, they still have 4+ years of code in the original language; and, React Native doesn't stop the use of Java parent t-writescode 1 year ago
[1] https://en.wikipedia.org/wiki/React_Native
So, even if they did use React Native, they still have 4+ years of code in the original language; and, React Native doesn't stop the use of Java