Mellifluo.us
Speech-fluency coaching for people who say “um” too often, rush under pressure, or trail off when nervous. Every analysis runs on your device — your voice never leaves your phone.

What it is
Mellifluous — Latin for “honey-flowing speech” — is a speech coach that treats how you sound as something to refine, not diagnose. It listens while you practice, measures rate, pitch, and disfluency in real time, and builds training plans from your own sessions. A parallel iOS track applies therapeutic-grade delayed auditory feedback for cluttering. The architectural bet: everything runs on-device, so the most personal data there is — your voice, unguarded — stays yours.
The Pipeline
Key Capabilities
- Live speech-rate tracking with sub-100ms feedback
- Pitch and resonance analysis via YIN fundamental-frequency detection
- Disfluency patterns surfaced gently — filler words, rushes, trail-offs
- Delayed auditory feedback track for cluttering, a disorder affecting ~1% of people
- Exercise plans generated from your own sessions, not generic drills
- Honey-flow design language — editorial warmth, not a medical instrument
Privacy
No cloud audio, no transcripts on a server. The analysis pipeline runs entirely in the browser's audio worklet.
Design Language
Golden gradients, honeycomb texture, sonic-resonance motifs, italic Fraunces headlines — a deliberate rebellion against clinical speech-tech aesthetics.