Proof

@pocketpalai/react-native-speech

native-seam only - the fork's Speech class, neural engines, phonemizer and HighlightedText stay in the bundle; RNSpeech follows the fork's RNSpeech.mm and native_dict.cpp over the shared iOS AVSpeechSynthesizer model
70%
API coverage
No visual proof cases have been published for this package yet. The registry summary below describes what the compat layer implements.
Working (12)
initializeresetspeakspeakWithOptionsstoppauseresumeisSpeakinggetAvailableVoicesneural PCM playAudio/stopAudio/pauseAudio/resumeAudio through the host audio elementEPD1 dictOpen/dictLookup over app filesall emitters
Missing (3)
the host voice speaksnot the iOS voice; duckingsilent mode and audio session interruptions have no host effect