Proof

react-native-volume-manager

the reference iOS simulator performs this package's behavior. Peach currently provides only this unsupported shape: getVolume returns 0.5; setVolume / showNativeVolumeUI accepted; isInSilentMode=false; listeners never fire. imports and API shape receive no behavior credit
0%
API coverage
No visual proof cases have been published for this package yet. The registry summary below describes what the compat layer implements.
Working—
Missing
browsers cannot modify system volume; only the per-element <audio> volume is mutable from JS