D.A.F Fluency studio

The best application for stuttering therapy.

Fluency brings together the two most-researched auditory feedback methods against stuttering, cluttering and rushed speech: DAF (delayed feedback) and FAF (pitch shift).

SCIENCE

• Up to -85% blocks in adults who stutter in reading (Stuart et al., 1996).
• -74% disfluencies with FAF -1 semitone (Antipova, 2008).
• AI Choral Speech: -70% disfluencies (JSLHR, 2024).

FULL AUDIO STUDIO

• Real-time DAF knob (0 to 500 ms)
• FAF knob (-3 to +3 semitones)
• Visual metronome with adjustable BPM
• 8 therapy presets (reading, conversation, spontaneous speech...)

BUILT-IN AI (Pro)

• Post-session Coach (GPT-5.2 + Whisper)
• Custom practice texts
• Choral Speech reading with AI voice
• Oral story completion
• Karaoke with original lyrics
• Fluence Run mini-game

6 LANGUAGES French, English, Spanish, German, Italian, Portuguese.

FREE MODE always available DAF Player + Metronome + History + Scientific documentation.

Pro: monthly or yearly subscription, or one-time lifetime purchase.

Fluency is a training tool. It does not replace speech-language therapy.

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