Is LRNRS Free Battles really free?

Yes! Free Battles are completely free forever. No hidden costs, no paid tiers required. You can create unlimited battles with 1-4 questions each.

How is LRNRS different from Kahoot?

LRNRS is faster (60-second setup vs multiple minutes), completely free (no paid tiers for core features), requires no sign-up for teachers or students, and has AI that generates better technical questions with proper calculations and LaTeX support.

Do students need accounts to join?

No - students just enter a join code and their name (or nickname). No email, no password, no account required. Privacy-first design.

Can I use LRNRS for formative assessment?

Yes! After each battle, you receive an email with student rankings, question-by-question accuracy stats, and which questions students found most difficult. Perfect for identifying gaps in understanding.

Live Quiz Battles for

Chemistry Classes

Run a live chemistry quiz battle in about 60 seconds. Supports LaTeX equations for stoichiometry, thermodynamics, kinetics, and organic chemistry. Students join with a code — no accounts, no app.

No student accounts • Unlimited participants free • Manual creation free forever

Built for Technical Content

LaTeX equation rendering

Write equations the way you'd write them in a textbook. LRNRS renders inline math like $K_a = \frac{[H^+][A^-]}{[HA]}$ directly in the question and answer choices.

Works in question text, answer options, and explanations.

AI chemistry question generation

Describe the concept (e.g., "Le Chatelier's principle — 5 questions, multiple choice") and get a full question set with distractors and explanations. Validated for quantitative accuracy before you see it.

Available on Pro Lite ($9.99/mo) and Pro ($14.99/mo).

Questions on every student's device

Unlike Kahoot — where questions only appear on the projector — LRNRS shows the full question, equations and all, on each student's phone or laptop. No projector required.

Post-battle remediation

See which concepts students missed class-wide, then generate a targeted follow-up practice focused specifically on those gaps. Close the loop between assessment and learning.

Topics Instructors Use LRNRS For

Stoichiometry and mole calculations
Acid-base equilibria and pH
Electron configuration and periodic trends
Organic functional groups and reactions
Thermodynamics: enthalpy and entropy
Kinetics and rate laws
Electrochemistry and redox reactions
Molecular geometry and hybridization

How It Works

Step 1
Create your battle
Go to lrnrs.ai/battle/create. Enter your email and battle name. Write up to 4 chemistry questions (free), or upgrade for unlimited questions. You can include images of molecular structures or diagrams.
Step 2
Students join instantly
Display the join code in class. Students go to lrnrs.ai/battle, enter the code and a name, and they're in. No Kahoot account, no Google sign-in, no friction.
Step 3
See results and intervene
After the battle, you get a breakdown of which questions students missed most. Generate a remediation practice for those specific concepts in one click.

Ready to run your first chemistry battle?

Manual question creation is free. Write your stoichiometry or equilibrium questions, launch, and see who's following along — in about 60 seconds.