Vivral by Nair Engineering

Private Health Intelligence.

Vivral overview showing its private health assistant, on-device tools, and product experience

Tested by those at…

What Vivral is for

Clarity when it matters. Privacy by default.

01

Affordable

Built for efficient inference so routine questions stay cheap to serve — and realistic to price for real users.

02

Intelligent

Clear explanations for everyday health questions. Not a replacement for clinicians — a layer of understanding between searches and care.

03

Private

Health context stays with the user. Vivral organizes and explains; people decide what to share and with whom.

Private by default

Health questions should not feel public.

Users stay in control of what they add and what they share. Vivral explains and organizes; clinicians diagnose and treat. That separation keeps the product honest — and the experience calmer.

Explore features
Vivral Patient Passport screen on iPhone

Investor case

Substantially cheaper to run.

Cloud-only Health Intelligence products pay again every time a user asks a question. Vivral is built around efficient inference so routine assistance can stay affordable for users and sustainable for the company as usage grows.

Cloud-only assistant

Every conversation rents expensive compute.

More engagement can mean more recurring serving cost, which pressures pricing and margin.

Vivral

A lower cost curve from day one.

Efficient routine inference makes affordable subscription pricing and stronger margins realistic.

Investor takeaway

Better unit economics as usage grows.

Health Intelligence only scales if the product can answer often without cloud-style cost drag.

Usage cost

Monthly usage cost as queries grow

Frontier path: ~$20 limited consumer plan at light use, then API token rates at daily volume. Vivral Pro stays $4.99/mo unlimited.

0 Frontier unlimited path vs Vivral Pro at high use
0 Frontier token-equivalent $/mo at daily companion use
0 Vivral Pro unlimited $/mo
  • Frontier (~$20 limited → ~$45 token path)
  • Vivral Pro $4.99 unlimited

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Case study

Impact in India.

How Vivral is being used to improve access and affordability across India — field notes, lessons, and what comes next.

Read the case study

Global Health Intelligence access

Affordable intelligence for everyone.

Vivral is a medical assistant designed to bring Health Intelligence across the globe at low cost — for people who need clarity long before they can reach a clinic.

Illustrated cityscape representing global Health Intelligence access

Why now

Health Intelligence needs an affordable layer.

Vivral is built for the millions of moments when people need clarity — not another expensive appointment, panic search, or generic chatbot response.

Nair Engineering