Does my child have a lisp? Hear it for yourself in two minutes.
Record three short words, then hear them side-by-side with clear examples — you’ll know what you’re listening for in about two minutes. Free, and your child’s audio stays on your device unless you ask for the optional AI check.
Short answer: the most common lisp is a frontal lisp, where the tongue pushes forward on ‘S’ and gives it a soft ‘th’ quality (so “sun” sounds like “thun”). It’s common, developmentally normal in young children, and very responsive to daily practice. The free test below records your child saying sun, soup, and bus, then plays each one side-by-side with a clear example so you can hear the difference yourself — with guidance and three next steps based on what you notice. It’s a screening, not a diagnosis. (Real AI scoring lives in our free daily practice program.)
Does your child have a lisp?
Record 3 short words, then hear them next to clear examples — you’ll know what to listen for.
Free · ~2 minutes · audio stays on your device unless you ask for the AI check
Your child’s audio stays on your device unless you ask for the optional AI check. The recordings are held in memory for playback on this page and discarded when you retake or leave. If you choose the AI second opinion at the end, those three clips — and only those — are sent once for analysis, and are not stored.
Lisp test FAQ
Does my child have a lisp?
Record your child saying three short S-words (sun, soup, bus), then compare each recording side-by-side with a clear example and answer three simple listening questions. Your observations map to the classic lisp patterns (frontal or lateral) with plain-English guidance. It's a screening by the person who knows this voice best — not a diagnosis; if you're unsure or don't hear change in a few weeks, see a speech-language pathologist.
What is a frontal lisp?
A frontal (interdental) lisp happens when the tongue pushes forward on the ‘S’ sound, giving it a soft ‘th’ quality (so ‘sun’ sounds like ‘thun’). It is very common in young children and usually responds well to daily practice.
Is the lisp test free and private?
Yes. The test is free and takes about two minutes. The listening comparison happens entirely in your browser — recordings stay on your device and are discarded when you leave or retake the test. If you choose the optional AI check, the three clips are sent once for secure analysis with your explicit consent, used only for that analysis, and never stored.
At what age should an S lisp be corrected?
Many children produce a clear ‘S’ by around age 4–5. A frontal lisp is developmentally common before then. If a lisp persists past about age 4½, or you have concerns, a daily practice program and a check-in with a speech-language pathologist are good next steps.
Every sound. One step closer. SpeechStep screenings are a friendly first step — not a medical diagnosis. If a lisp persists, please see a speech-language pathologist.