modi-fi, a private voice-training monitor

Field notes

The monitor is organized around three live measurements: fundamental frequency with note detection, loudness over time, and formant-based resonance feedback. The training model includes drills such as holds, glides, yawn-sighs, vowel-space work, intonation contours, and connected-speech passages. The site says the microphone is active only while the app is open and that saved clips remain on the phone; App Store availability and several surrounding features are presented as forthcoming.