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Little Voices: on-device iOS voice app with Phonon TTS and Pipecat
Open-source iOS project in which an angel and a devil on your shoulder answer questions by voice, with speech-to-text and text-to-speech running on the phone itself, without network inference, according to the source dated October 20, 2026.
According to the source, published October 20, 2026, Little Voices is an open-source iOS app in which an angel and a devil on your shoulder answer questions by voice. The pipeline uses Pipecat in embedded Python, Apple SpeechAnalyzer for speech-to-text, and the Gradium Phonon 31M model for text-to-speech, with no network inference. The source presents it as a concrete example of running speech models entirely on a phone, with a pipeline that can be inspected.
To consult and verify, open the original page indicated by the source, read the pipeline, and check the versions of the components named before reusing any part. Rota Nacional is a cloud API platform and does not run models on the device, so this case is not a platform capability. The source gives no performance, cost, or license details beyond what is described.
Original source: Little Voices: app de voz on-device com Phonon TTS e Pipecat no iPhone