[saghul]

RN on Android also uses JSC, so no JIT. And, and per the video (https://www.youtube.com/watch?v=zEjqDWqeDdg&feature=youtu.be...) there is no JIT on Hermes either.

[sahrens2012]

JSC on Android can use JIT, but some choose to disable it because it uses more memory than it’s worth.