Free for every teacher, everywhere

Did your class understand today’s lesson?

Pick a topic. Share a six-digit code, or count raised hands. In three minutes you see who understood, who didn’t — and exactly which idea is in the way.

For students
Join your class

Your teacher wrote a code on the board. No app, no login, no name.

Practice on my own
For teachers
Check the room

497 NCERT topics, ready. Or type any topic and get a quiz instantly.

The difference

“Class average: 58%” is not actionable. This is.

Every wrong answer maps to a named misconception. You don’t get a score to file away — you get a sentence you can teach against tomorrow morning.

See a live class →
Class 6 · Fractions · 30 answered
Bigger denominator means bigger fraction 12 students
Can only compare with common denominator 7 students
Numerator and denominator swapped 4 students
Understood — reasoned about piece size 7 students

Pick your class

497 topics · NCERT 1–12 · 6 languages
1 Math, EVS, English 2 Math, EVS, English 3 Math, EVS, English 4 Math, EVS, Science 5 Math, EVS, Science 6 Math, Science, History, Geography, Civics 7 Math, Science, History, Geography, Civics 8 Math, Science, History, Geography, Civics 9 Math, Science, Economics, History, Civics 10 Math, Science, Economics, History, Civics 11 Physics, Chemistry, Biology, Math, Business, Accounts 12 Physics, Chemistry, Biology, Math, Business, Accounts
01
Pick a topic
Choose from 497 NCERT chapters, or type any topic — the tool builds a quiz instantly from a library of 481 research-backed misconceptions.
02
Share the code, or count hands
Write a six-digit code on the blackboard and students join on any phone — no app, no login. No phones? Students raise one to four fingers and you enter four numbers.
03
See who understood
Every wrong answer maps to a named misconception. You see the pattern before the period ends.
04
Act tomorrow
A concrete reteach suggestion — naming a physical object and an action — is ready before you leave.
2G
A first page is under 100 KB with fonts, about 10 KB a page after. Loads in seconds on a cheap Android phone over 2G.
No names
Students are seat numbers, or just hands in the air. No account, no email, no phone number — ever.
6 languages
English, Hindi, Tamil, Telugu, Bengali, Marathi. Questions and misconceptions, not just the shell.
Free
No freemium. No trial. No catch. Free for every teacher, everywhere.
For districts
Start a free pilot
30 days, 10 schools, zero cost. Misconception-level data on your district. →
For schools
Register your school
Get a school code, track understanding across classrooms, benchmark against your district. →
For principals
School dashboard
Understanding by subject and grade, repeating misconceptions, suggested interventions. →
For funders
Impact & partnership
Sourced evidence, the structural argument, and four concrete asks. →