ADAPTIVE PREPARATION FOR JEE MAIN & ADVANCED
Solve on screen — scribble like paper. CogniTwin reads the process, learns how you think, and shows you exactly what you're missing. Question by question.
Free during early access · No card required · Google account works
PhysicsA body starts from rest with a = 2 m/s². Distance covered in 3 s?
No options here — type the value, or skip
Scribble, pick an option — Pi reads your move.
💡 Best experience on a phone or tablet — record the reel & share it
THE 30-SECOND VERSION
Rendered from our own pipeline — the same engine that turns your mistakes into lessons.
MEET PI
Pi was trained on every mistake our students ever made — so he knows exactly where you'll slip, and the trick that saves you. Every week he cracks one open: a real question, the obvious (wrong) move, and the 5-second escape.
Every platform tells you Rotation: 54%, weak. So you re-read forty pages and score the same. The real problem was never the chapter — it was a habit: a sign flip that follows you through rotation, thermodynamics and electrostatics alike.
CogniTwin finds those cross-chapter patterns, prices them in marks, and drills them to elimination.
Patterns, not chapters. Each one is finite, named, and fixable in days.
A diagnostic of real PYQ difficulty maps your starting point, chapter by chapter. Free, and it takes one session.
One question at a time, chosen from a verified bank by your mastery, your traps and the setter's style. A wrong answer triggers a re-teach, not a re-read.
DNA score, chapter mastery and your Error Fingerprint update every session. You see patterns eliminated — with dates.
Every answer feeds a live model of how you solve — depth, pace, impulse. Questions adapt to that model, not to a syllabus PDF.
Weakness isn't a chapter — it's a pattern. Sign flips follow you across four chapters; we name the pattern, cost it in marks, and drill it to elimination.
Six institute personalities — Bombay's traps, Roorkee's grind — variants crafted in the style of the paper you'll actually sit.
Probability-ranked concepts for your exam year, calibrated on a decade of PYQ patterns — with a published accuracy track record.
THE FACULTY
Verified educators publish their question banks here — quality-verified, adaptive, and drilled by your twin. Subscribe to the teacher you trust.
CogniTwin installs as an app in one tap — full-screen rough work, no browser bars, feels like writing on real paper.
Open cognitwinedu.com in Safari → tap Share → select “Add to Home Screen”
Open the site in Chrome → tap the ⋮ menu → select “Install app” or “Add to Home Screen”
Open the site in Chrome or Edge → click the install icon in the address bar → Install
Tablet + stylus is the sweet spot — rough work feels like writing on real paper.
Take the calibration. Meet your twin. See your fingerprint in one session.
Start free