Head movement
For patients who can turn their head
The screen is split into four zones. Turning the head highlights an answer and a single blink picks it. This is the quickest mode.
- One short calibration
- An answer in a couple of seconds
Let patients who cannot speak answer for themselves.
A caregiver asks a question. ReNav puts four likely answers on screen, and the patient picks one by turning their head, blinking, or spelling a reply in Morse. The app says it out loud.
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- Any webcam No special hardware
- In the browser Chrome or Edge, nothing to install
- Video stays local Tracking runs on the device
- ₹0 to start Morse is unlimited on every plan
How a conversation goes
You need a laptop or tablet with a camera. Setting up takes a couple of minutes, and most of that is a short calibration.
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The caregiver asks
Say the question into the microphone, type it, or tap one of the ready-made ones, such as “Are you in pain?”
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Four answers appear
Short answers written for that question, in a second or two. “None of these” is always in the middle.
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The patient chooses
With a turn of the head, by blinking through the answers, or by spelling. Tracking runs in the browser.
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ReNav says it
The answer is spoken aloud and saved to the history, so the family can see what was said earlier.
Three ways to answer
Pick the one the patient can manage today. You can switch at any time and keep the same history.
Blink only
For locked-in patients
The answers are stepped through instead of pointed at. A short blink moves on; a long blink picks. The head does not need to move.
- Optional auto-scan, so one blink is enough
- Blink timing adjustable per patient
Morse spelling
When the answer is not on the list
The same two blinks, short for a dot and long for a dash, spell out any reply. It is slower, but the words are the patient’s own.
- Alphabet chart always on screen
- Unlimited on every plan
Nobody needs to know Morse
The full alphabet stays on screen. As dots and dashes come in, letters that can no longer match fade out, and the one being spelled lights up. A bar under the letter shows how long the blink has been held, so the patient can see when a dot becomes a dash.
A pause finishes the letter. A longer pause adds a space. The caregiver has Undo, Clear and Speak.
Who uses it
ReNav is an augmentative and alternative communication (AAC) tool for people who have lost speech and movement through ALS, spinal cord injury, stroke or severe cerebral palsy, and for people who cannot speak for now, such as ventilated ICU patients.
Dedicated AAC devices are expensive and need specialist fitting. ReNav runs on a laptop or tablet you already have.
It is for patients who understand but cannot speak. It does not suit conditions that affect understanding itself, such as receptive aphasia.
- ICU, intubated and ventilated
- Awake, but unable to speak around a tube. The patient answers directly, and two long blinks with no question on screen call for help.
- Stroke rehab and neuro wards
- For patients who understand perfectly but cannot form speech. Full sentences to choose from, in English, or Hindi and Tamil on a paid plan.
- Palliative and end-of-life care
- For the conversations families most want to have. Morse lets the patient say something entirely their own, and every exchange is kept.
- Head and neck cancer, laryngectomy
- For patients who have lost their voice to surgery or radiotherapy. A whole sentence takes a glance and a blink.
Made for wards and homes
Noisy rooms, shared tablets, patchy connections and tired caregivers.
Nothing to install
Open the website on a laptop, desktop or large tablet. No drivers and no app store.
Video never leaves the device
Face and blink tracking run in the browser. No video or image is sent to a server.
Answers that fit the question
Options are written for each question and take recent conversations into account, rather than one fixed list.
A way to call for help
With nothing on screen, two long blinks sound an alert that repeats until a caregiver responds.
Light on data
Works on a basic mobile connection. The camera never streams anywhere.
English, Tamil and Hindi
English on the free plan. Paid plans add Tamil and Hindi for screens, answers and speech.
Pricing
Start free and upgrade only if you need to. Morse mode is unlimited on every plan.
Free
₹0
For trying it at home
- 5 AI questions a day
- All three ways to answer
- Full answer history, in English
Care
₹899 / month
or ₹8,999 a year, two months free
- Unlimited AI questions
- Tamil and Hindi, spoken on any device
- Email support
Hospitals and sponsors
Talk to us
Wards, NGOs and CSR programmes
- Several patients on one account
- Help setting up on your devices
- Sponsor a patient’s year of care
Common questions
Anything else, write to [email protected].
What equipment do we need?
A laptop, desktop or large tablet with a camera, and Chrome or Edge. A phone screen is too small for the patient to choose between answers comfortably, though this website works on any device.
Is the patient’s video sent anywhere?
No. Face and blink tracking run inside the browser, and no video or image leaves the device. The question asked and the answer chosen are saved to your account’s history. The privacy policy lists exactly what is stored.
What if the right answer isn’t one of the four?
The patient can choose “None of these”, and the caregiver can ask again. For anything the four answers cannot cover, Morse mode lets the patient spell their own reply.
Can the patient call for help?
Yes. When no question is on screen, two long blinks sound a chime and speak a call for help, repeating until a caregiver answers it. One long blink alone does nothing, so falling asleep never raises an alarm.
The microphone doesn’t understand us. What now?
Type the question instead, or tap one of the ready-made questions. Both work exactly like speaking.
How do we pay for a plan?
There is no card checkout. Send a request, we write back with how to pay, and we switch your account over by hand, usually within a day. Nothing renews automatically. If cost is a barrier, tell us.
Set it up at the bedside today.
Open ReNav on the laptop you already have, run the two-minute calibration, and ask the first question.
