JSC isn't even in the same ballpark for memory usage. https://medium.com/walmartglobaltech/react-native-memory-profiling-jsc-vs-v8-vs-hermes-1626949a653b https

JSC isn't even in the same ballpark for memory usage. https://medium.com/walmartglobaltech/react-native-memory-profiling-jsc-vs-v8-vs-hermes-1626949a653b https://medium.com/walmartglobaltech/react-native-memory-pro... Apparently Apple has invested more in raw JS performance while Google has invested more in their garbage collector.