AI-Powered AAC for ALS

Give someone back
their voice.

Kural uses eye tracking and AI to let ALS patients speak in their own cloned voice — with just 3 eye movements per sentence.

0
Eye movements per sentence
Your voice
Your actual voice

ALS takes the voice.
We give it back.

Today's AAC devices were designed for motor control, not for someone whose eyes are their only window left.

Without Kural
Current AAC device
|
I
L
O
V
E
Y
O
U
Scanning letter by letter…0s elapsed
With Kural
Kural
👁️Intent detected: "Express affection"
🧠Context: family nearby, evening
🔊"I love you, and I'm so grateful you're here."
3 eye movements total0s

"The eyes are the last thing ALS takes.
We built for that moment."

The process

Three steps. One voice.

01

Bank your voice

Record sentences while you still can. Our pipeline trains a voice model on AWS SageMaker that captures your exact timbre, cadence, and inflection — not a generic synthetic voice.

02

Set up your profile

Tell us about your communication style, your family, your humor. Kural learns who you are — so the sentences it suggests sound like you, not a machine.

03

Speak with your eyes

Gaze at intent tiles. Kural generates full, contextually aware sentences via Amazon Bedrock. Kural speaks the sentence back in your cloned voice.

Infrastructure

Powered by AWS

Kural runs on a fully serverless AWS stack — eye input on iPhone feeds directly into API Gateway, Lambda, and Bedrock with no edge hardware required.

Amazon Bedrock
Context-aware sentence generation via Claude
Amazon SageMaker
Per-patient voice model training and synthesis
AWS Lambda
Serverless orchestration of every API action
Amazon DynamoDB
Patient profiles and conversation history
Amazon Cognito
Secure patient authentication and session management
Amazon S3
Voice sample storage and synthesized audio delivery

Architecture overview

iPhone
Eye tracking
API Gateway
REST API
Lambda
Orchestrator
Bedrock
LLM
SageMaker
Voice model
S3
Audio output
For caregivers

You set it up.
It adapts over time.

Kural is designed so caregivers can get started without technical support — and so the device evolves alongside the patient's changing needs.

  • Self-service onboarding — record, upload, done in under an hour.
  • Caregiver dashboard to update patient preferences, topics, and family names anytime.
Kural Caregiver Dashboard
Robert Chen
ALS · Stage 3 · Caregiver: Linda Chen
Active
Voice model status
Active
Last session
Today at 2:14 PM
Sentences this week847
Gaze accuracy94%
Daily usage (this week)
MTWTFSS
Communication styleWarm & conversational
FamilyComfortMedicationEntertainment
Why we built this

35,000 people in the US live with ALS. Most will lose their voice. Almost none have a tool that preserves it.

We're a team of University of Washington computer science students who believe that the technology to solve this problem already exists — it just hasn't been applied where it's needed most. Kural is our attempt to close that gap. We're building for the people who deserve better tools, not for the people who make headlines.