Observed arrival · 2026-08-30
modi-fi keeps voice practice on the phone
A private iPhone voice-training app that gives live feedback on pitch, loudness, and resonance.
Field notes
The proposed app treats voice practice as a series of live measurements rather than delayed recordings: pitch is traced with note detection, loudness is shown over time, and resonance is represented through formant tracking and a vowel plane. Its privacy model is unusually explicit: the page says there are no servers, analytics, ads, trackers, or third-party SDKs, while saved clips and diary data remain on the iPhone. The App Store release and several surrounding features are still presented as forthcoming.
Observed signals
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Editorial observations of this landing page, not a rating.
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