SPS tracking, RESTART-DCM module (parent/child), fluency assessment, and at-home exercises.
1%
of the adult population worldwide stutters
3β4Γ
more common in boys
75%
of children who stutter recover spontaneously before age 8
Stuttering (F98.5) shows up as involuntary blocks, prolongations, and repetitions. The person is fully aware of the difficulty and often develops speech anxiety, avoidance strategies, and social withdrawal. The challenge is as much emotional as it is motor.
ICD-10: F98.5Blocks: the word "locks up" and won't start
Repetitions: sounds or syllables repeated involuntarily
Prolongations: a sound stretched out unintentionally
Secondary behaviors: facial grimacing, muscle tension
Anticipatory anxiety and avoidance of speaking situations
Tracks articulation rate (syllables per second) in guided reading and spontaneous speech. Essential for rate-regulation approaches (Camperdown, fluency shaping).
The child speaks, the parent rephrases at a reduced rate. The app measures both SPS curves at once and calculates the gap. Based on Franken's Demands-Capacities model (2007).
A structured progression tailored to each fluency/rate profile. Every step introduces a clinical goal: breath pausing, chunking, easy onset, self-monitoring.
Graded exposure to silence to desensitize initiation anxiety, after Van Riper (1973). The patient gradually tolerates longer silences without compensatory speech.
An SPS progress curve across several weeks. Spot the exercises where rate consistency (CV) improves or degrades. Baseline vs. target comparison.
Assign texts, exercise modes (reading, spontaneous speech, dialogue), and personalized rate goals directly to each patient.
These modules run right in your browser, microphone optional. This is what your patients see between sessions.
Read this sentence aloud:
"The cat is quietly eating its food in the kitchen."
Keep your level in the green zone for 10 seconds.
Parent and child are both speaking too fast.
Based on Franken & Putker-de Bruijn (2007) Β· RESTART-DCM
A preview of the modules available in the app. Every exercise can be assigned from your dashboard.
Your patient knows down to the second whether they're in the zone. They stop waiting for your verdict and adjust their own rate.
The parent sees their own curve next to the child's. Without any explanation, they grasp how their rate shapes their child's.
Every session, the patient holds a little longer in the silence. They see for themselves that the emptiness no longer overwhelms them.
Stopping on purpose in the middle of a sentence. Speech becomes less mechanical and the anxiety more manageable.
One milestone a week, from rate work all the way to spontaneous speech. Your patient always knows where they stand.
What your patient learned in reading, they now apply in a real conversation. The transfer is measurable.
1. Initial assessment
SPS measured in reading and spontaneous speech. Compared to Van Zaalen norms by age.
2. Guided path
8 progressive steps: from rate work to self-monitoring in spontaneous speech.
3. RESTART-DCM
For children: the parent vs. child SPS curve displays in real time. Goal: Ξ β€ β0.3 syll/sec.
4. Silence module
Graded exposure to silence. Tolerated duration measured and tracked across sessions.
5. Follow-up
Between-session SPS curve, full history, prescriptions adjustable at every visit.
The patient speaks, the analysis engine pre-fills the measures, you keep control of every value β and the Word report is ready at the end.
Age-adapted pathway Β· ages 4-6 β adult
Clinical orientation aids, to be validated in consultation. The app does not establish any diagnosis.
The Camperdown protocol (rate regulation + prolonged speech) produces fluency gains maintained at 12 months.
O'Brian et al. (2003), Camperdown Program. JSLHR
Reducing parental speech rate by 0.3 syll/sec or more reduces developmental stuttering in children aged 4 to 6.
Franken & Putker-de Bruijn (2007), RESTART-DCM
Desensitization to silence reduces initiation anxiety and avoidance behaviors.
Van Riper (1973), The Treatment of Stuttering
An honest look at what the main tools on the market offer for this indication.
| Tool | SPS measurement (rate) | RESTART-DCM module | Built for clinicians | No install | SLP tracking | Free for patients |
|---|---|---|---|---|---|---|
| Talk Slower | ||||||
| #Stuttering.app | ||||||
| Stamurai | ||||||
| DAF Pro |
= partial or limited feature. Sources: official tool websites, May 2026.
Your patients practice at home with the same biofeedback as in session. You see their progress before they even arrive.
These indications share a mechanism or a close differential diagnosis. Explore the dedicated tools.
Van Zaalen SPS biofeedback, assessment battery, cognitive-load exercises and at-home tracking.
See detailsUnderstand, detect, and track word-final disfluencies: mostly in children with autism or a neurodevelopmental disorder, sometimes into adolescence or adulthood.
See details