D.A.F Fluency studio
DAF + FAF · Stuttering
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Fluency combines DAF, FAF, choral speech, AI coaching and personalized exercises to support daily fluency practice alongside speech 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.
Terms of Use (EULA): https://langage.online/cgu
Privacy Policy: https://langage.online/confidentialite
Ratings & Reviews
- Stimulation Lab: white, pink and brown noise generators with low-pass, high-pass, band-pass and narrow-band filters. Built-in hardware limiter and emergency stop button.
- Combined mode: overlay DAF and FAF on top of the generated noise, in a single audio stream.
- Clinical stuttering analysis: automatic detection of repetitions, prolongations, blocks and interjections with word-level transcription.
- Clinical metrics: %SS, articulatory rate, phonation time.
- Interactive timeline: edit, delete or recategorize each detected event.
- Progress tracking: charts over 7 days, 30 days and 1 year.
- Clinical report export in CSV, JSON or PDF.
- Audio fixes and self-repair when the system interrupts the session.
The developer, Philippe Mouchnino, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Philippe Mouchnino
- Size
- 57.8 MB
- Category
- Medical
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Fluency Pro Annuel $49.00
- Fluency Pro Mensuel $4.99
- Fluency Pro à Vie $119.00
- Copyright
- © 2026 Philippe Mouchnino
