nBook — Every textbook. One book.

Chapter 01The form

It opens like a book, because it is one.

Children already know how to use a book. nBook keeps the form — a hinged cover, a fabric spine, two facing pages — and replaces the paper with two synchronized e-paper displays and a stylus that writes like a pencil.

The nBook open flat, left page showing a textbook chapter, right page showing handwritten study notes, stylus at its side — Left page: the textbook. Right page: the student's own hand. The synchronization engine keeps them in conversation.

Five ways to hold two pages

A dual-screen synchronization engine manages how the pages relate — so the device behaves like a textbook, a workbook, an exam hall, or a tutor's desk as the moment demands.

Reference: Textbook on the left, notes and exercises on the right.
Comparison: Problem on one page, worked solution on the other.
Continuous: Both pages flow as one open book.
Interactive: Content on the left; the AI tutor answers on the right.
Assessment: Exam on the left, scratch pad on the right — with the anti-cheating examination fold.

Chapter 02The tutor

A companion that grows with the student.

Inside every nBook lives an on-device AI tutor. It builds a persistent picture of how a child learns — strengths, gaps, pace — and shapes explanations, examples and practice to fit. As the student advances, the companion unlocks new capabilities alongside them. No internet required.

Adaptive: Difficulty tracks performance across every subject, from primary through secondary curriculum.
Offline: A lightweight model runs on the device itself — tutoring works with no connection at all.
Aligned: Content follows the national curriculum, with textbook updates syncing when a connection appears.

Mesh class: Classrooms sync peer-to-peer — one teacher's device can seed a whole room, no infrastructure needed.
Proctored: The AI stylus detects handwriting biometrics for offline exam integrity.
Private: The learning profile lives on the child's own device, not in a data centre.

The nBook lying closed on a weathered school desk at golden hour, sunlight raking across its integrated solar back panel

Chapter 03The sun

Charged by daylight.

The back cover is a solar panel. E-paper sips power — nothing at all while a page is being read — so a low-voltage solar charging circuit is enough to keep nBook alive indefinitely wherever there is daylight. A school with no grid is still a school with full batteries.

∞

Off-grid operation in daylight

0 W

Power drawn by a page at rest

MPPT

Solar controller tuned for e-paper loads

Chapter 04The page

Ink, not light.

A child's eyes were never meant to stare into a lamp. nBook's pages emit nothing — they reflect ambient light exactly as paper does, at print-grade sharpness, with a stylus digitizer layered beneath for handwriting that feels like pencil on paper.

Macro photograph of the stylus tip writing on the e-paper display, showing its paper-like texture and crisp ink lines — Electrophoretic ink at print resolution. Partial refresh keeps interaction quick without full-page flashes.

The film4 minutes 43

Why nBook exists, told plainly.

The book, the companion, the honest state of the engineering, the gurukulam redefined, and the carbon story — measured, then claimed.

Chapter 05The mission

Lighter bags. Brighter eyes. Standing trees.

nBook was designed for the Indian classroom first — for the child carrying a third of their body weight to school, for villages where the grid flickers, and for the forests cut down every year to print what a 300-gram device can hold.

Children in a Tamil Nadu classroom reading from open nBook devices in morning light — Designed for Tamil Nadu classrooms; manufactured in Tamil Nadu.

3 in 4

Indian school bags exceed the safe-weight limit set by the School Bag Policy

~3B

schoolbooks printed in India every year — a shelf of paper each childhood

CO₂e

measured, then claimed — a paper-avoidance carbon methodology in development with the International Carbon Registry

AppendixThe family

One device. A whole shelf.

nBookShelf

The digital library and content store — every title, one sync away.

nbookshelf.com

nSchoolBook

The school platform — curriculum, assessment and classroom tools, online and on device.

nschoolbook.com

nBooklet

The compact variant, for magazines, pamphlets and quick reads.

nbooklet.com

nookShop

Devices, accessories and content, under one retail roof.

nookshop.com

Series A · manufacturing in Tamil Nadu

Be there when the book turns its next page.

nBook is patent-pending and moving from first public demonstration toward manufacture. Educators, institutions and partners — we would like to hear from you.

Write to us Back to the cover